forked from huawei/openGauss-server
727 lines
27 KiB
SQL
727 lines
27 KiB
SQL
create schema recursive_ref_recursive;
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set search_path to recursive_ref_recursive;
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drop table if exists rec_tb1;
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create table rec_tb1 (id int ,parentID int ,name varchar(100));
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insert into rec_tb1 values(1,0,'河南省');
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insert into rec_tb1 values(2,1,'信阳市');
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insert into rec_tb1 values(3,2,'淮滨县');
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insert into rec_tb1 values(4,3,'芦集乡');
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insert into rec_tb1 values(12,3,'邓湾乡');
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insert into rec_tb1 values(13,3,'台头乡');
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insert into rec_tb1 values(14,3,'谷堆乡');
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insert into rec_tb1 values(8,2,'固始县');
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insert into rec_tb1 values(9,8,'李店乡');
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insert into rec_tb1 values(10,2,'息县');
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insert into rec_tb1 values(11,10,'关店乡');
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insert into rec_tb1 values(5,1,'安阳市');
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insert into rec_tb1 values(6,5,'滑县');
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insert into rec_tb1 values(7,6,'老庙乡');
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insert into rec_tb1 values(15,1,'南阳市');
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insert into rec_tb1 values(16,15,'方城县');
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insert into rec_tb1 values(17,1,'驻马店市');
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insert into rec_tb1 values(18,17,'正阳县');
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drop table if exists rec_tb2;
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create table rec_tb2 (id int ,parentID int ,name varchar(100)) ;
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insert into rec_tb2 values(1,0,'河南省');
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insert into rec_tb2 values(2,1,'信阳市');
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insert into rec_tb2 values(3,2,'淮滨县');
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insert into rec_tb2 values(4,3,'芦集乡');
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insert into rec_tb2 values(12,3,'邓湾乡');
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insert into rec_tb2 values(13,3,'台头乡');
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insert into rec_tb2 values(14,3,'谷堆乡');
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insert into rec_tb2 values(8,2,'固始县');
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insert into rec_tb2 values(9,8,'李店乡');
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insert into rec_tb2 values(10,2,'息县');
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insert into rec_tb2 values(11,10,'关店乡');
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insert into rec_tb2 values(5,1,'安阳市');
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insert into rec_tb2 values(6,5,'滑县');
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insert into rec_tb2 values(7,6,'老庙乡');
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insert into rec_tb2 values(15,1,'南阳市');
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insert into rec_tb2 values(16,15,'方城县');
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insert into rec_tb2 values(17,1,'驻马店市');
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insert into rec_tb2 values(18,17,'正阳县');
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drop table if exists rec_tb3;
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create table rec_tb3 (id int ,parentID int ,name varchar(100)) ;
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insert into rec_tb3 values(1,0,'河南省');
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insert into rec_tb3 values(2,1,'信阳市');
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insert into rec_tb3 values(3,2,'淮滨县');
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insert into rec_tb3 values(4,3,'芦集乡');
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insert into rec_tb3 values(12,3,'邓湾乡');
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insert into rec_tb3 values(13,3,'台头乡');
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insert into rec_tb3 values(14,3,'谷堆乡');
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insert into rec_tb3 values(8,2,'固始县');
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insert into rec_tb3 values(9,8,'李店乡');
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insert into rec_tb3 values(10,2,'息县');
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insert into rec_tb3 values(11,10,'关店乡');
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insert into rec_tb3 values(5,1,'安阳市');
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insert into rec_tb3 values(6,5,'滑县');
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insert into rec_tb3 values(7,6,'老庙乡');
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insert into rec_tb3 values(15,1,'南阳市');
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insert into rec_tb3 values(16,15,'方城县');
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insert into rec_tb3 values(17,1,'驻马店市');
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insert into rec_tb3 values(18,17,'正阳县');
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drop table if exists rec_tb4;
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create table rec_tb4 (id int ,parentID int ,name varchar(100))
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partition by range(parentID)
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(
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PARTITION P1 VALUES LESS THAN(2),
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PARTITION P2 VALUES LESS THAN(8),
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PARTITION P3 VALUES LESS THAN(16),
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PARTITION P4 VALUES LESS THAN(MAXVALUE)
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);
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insert into rec_tb4 values(1,0,'河南省');
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insert into rec_tb4 values(2,1,'信阳市');
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insert into rec_tb4 values(3,2,'淮滨县');
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insert into rec_tb4 values(4,3,'芦集乡');
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insert into rec_tb4 values(12,3,'邓湾乡');
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insert into rec_tb4 values(13,3,'台头乡');
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insert into rec_tb4 values(14,3,'谷堆乡');
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insert into rec_tb4 values(8,2,'固始县');
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insert into rec_tb4 values(9,8,'李店乡');
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insert into rec_tb4 values(10,2,'息县');
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insert into rec_tb4 values(11,10,'关店乡');
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insert into rec_tb4 values(5,1,'安阳市');
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insert into rec_tb4 values(6,5,'滑县');
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insert into rec_tb4 values(7,6,'老庙乡');
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insert into rec_tb4 values(15,1,'南阳市');
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insert into rec_tb4 values(16,15,'方城县');
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insert into rec_tb4 values(17,1,'驻马店市');
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insert into rec_tb4 values(18,17,'正阳县');
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--
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----case: 1
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--
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explain(costs off)
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join (
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with recursive cte as
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(
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select * from cte1
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union all
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select distinct h.* from rec_tb1 h inner join cte c on h.parentID = c.col1
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)
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select * from cte
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) m
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on e.col2 = m.col1 join cte n on n.id =m.col2
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order by 1, 2;
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join (
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with recursive cte as
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(
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select * from cte1
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union all
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select distinct h.* from rec_tb1 h inner join cte c on h.parentID = c.col1
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)
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select * from cte
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) m
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on e.col2 = m.col1 join cte n on n.id =m.col2
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order by 1, 2;
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--
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----case: 2
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--
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explain(costs off)
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join (
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with recursive cte2 as
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(
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select * from cte1
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union all
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select distinct h.* from rec_tb1 h inner join cte2 c on h.parentID = c.col1
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)
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select * from cte2
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) m
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on e.col2 = m.col1 join cte n on n.id =m.col2
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order by 1, 2;
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join (
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with recursive cte2 as
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(
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select * from cte1
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union all
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select distinct h.* from rec_tb1 h inner join cte2 c on h.parentID = c.col1
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)
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select * from cte2
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) m
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on e.col2 = m.col1 join cte n on n.id =m.col2
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order by 1, 2;
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--
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---- case:3
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--
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explain(costs off)
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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join cte n on n.id =e.col2
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order by 1, 2;
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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join cte n on n.id =e.col2
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order by 1, 2;
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--
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---- case:4
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--
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explain(costs off)
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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order by 1, 2;
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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order by 1, 2;
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--
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---- case:5
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--
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explain(costs off)
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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join cte n on n.id =e.col2
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order by 1, 2;
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with recursive cte as
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(
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select id, parentID, substr(name, 1) as name from (with tmp as (select * from rec_tb1 where id<4) select *from tmp)
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intersect all
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select id, parentID, name from (with tmp as (select * from rec_tb4 where id<4) select * from tmp)
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union all
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select id, parentID, name from (with tmp as (select * from rec_tb3 where id<4) select * from tmp)
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union all
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select a.* from rec_tb4 a join cte b on a.id = b.parentID join rec_tb3 c on c.parentid=b.id where c.id<4
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),
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cte1 as
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(
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select distinct b.id col1, b.parentID col2, b.name from rec_tb4 a join rec_tb2 b on a.id = b.id group by col1, col2, b.name
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union all
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select d.col2, c.id, d.name from rec_tb1 c join cte1 d on substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1 where d.col1 in (select id from cte)group by c.id, d.col2, d.name
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)
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select
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e.*
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from cte1 e
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join cte1 m on e.col2 = m.col1
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join cte n on n.id =e.col2
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order by 1, 2;
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--
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---- case6
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--
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explain(costs off)
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WITH RECURSIVE cte AS
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(
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SELECT id, parentID, substr(name, 1) AS name
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FROM rec_tb1
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WHERE id<4
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UNION ALL
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SELECT a.*
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FROM rec_tb4 a
|
|
JOIN cte b ON a.id = b.parentID
|
|
JOIN rec_tb3 c ON c.parentid=b.id
|
|
WHERE c.id<4
|
|
)
|
|
select * from cte t1 join cte t2 on t1.id = t2.id order by 1, 2;
|
|
|
|
WITH RECURSIVE cte AS
|
|
(
|
|
SELECT id, parentID, substr(name, 1) AS name
|
|
FROM rec_tb1
|
|
WHERE id<4
|
|
|
|
UNION ALL
|
|
|
|
SELECT a.*
|
|
FROM rec_tb4 a
|
|
JOIN cte b ON a.id = b.parentID
|
|
JOIN rec_tb3 c ON c.parentid=b.id
|
|
WHERE c.id<4
|
|
)
|
|
select * from cte t1 join cte t2 on t1.id = t2.id order by 1, 2;
|
|
|
|
--
|
|
---- case6
|
|
--
|
|
explain(costs off)
|
|
WITH RECURSIVE cte AS
|
|
(
|
|
SELECT id, parentID, substr(name, 1) AS name
|
|
FROM rec_tb1
|
|
WHERE id<4
|
|
|
|
UNION ALL
|
|
|
|
SELECT a.*
|
|
FROM rec_tb4 a
|
|
JOIN cte b ON a.id = b.parentID
|
|
JOIN rec_tb3 c ON c.parentid=b.id
|
|
WHERE c.id<4
|
|
),
|
|
|
|
cte1 AS
|
|
(
|
|
select * from cte
|
|
),
|
|
|
|
cte2 AS
|
|
(
|
|
SELECT distinct b.id col1, b.parentID col2, b.name
|
|
FROM rec_tb4 a JOIN rec_tb2 b ON a.id = b.id
|
|
GROUP BY col1, col2, b.name
|
|
|
|
UNION ALL
|
|
|
|
SELECT d.col2, c.id, d.name FROM rec_tb1 c
|
|
JOIN cte2 d ON substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1
|
|
WHERE d.col1 in (SELECT id FROM cte1)
|
|
GROUP BY c.id, d.col2, d.name
|
|
)
|
|
SELECT
|
|
e.*
|
|
FROM cte2 e
|
|
JOIN cte2 m ON e.col2 = m.col1
|
|
JOIN cte n ON n.id =e.col2
|
|
ORDER BY 1, 2;
|
|
|
|
WITH RECURSIVE cte AS
|
|
(
|
|
SELECT id, parentID, substr(name, 1) AS name
|
|
FROM rec_tb1
|
|
WHERE id<4
|
|
|
|
UNION ALL
|
|
|
|
SELECT a.*
|
|
FROM rec_tb4 a
|
|
JOIN cte b ON a.id = b.parentID
|
|
JOIN rec_tb3 c ON c.parentid=b.id
|
|
WHERE c.id<4
|
|
),
|
|
|
|
cte1 AS
|
|
(
|
|
select * from cte
|
|
),
|
|
|
|
cte2 AS
|
|
(
|
|
SELECT distinct b.id col1, b.parentID col2, b.name
|
|
FROM rec_tb4 a JOIN rec_tb2 b ON a.id = b.id
|
|
GROUP BY col1, col2, b.name
|
|
|
|
UNION ALL
|
|
|
|
SELECT d.col2, c.id, d.name FROM rec_tb1 c
|
|
JOIN cte2 d ON substr(c.parentID, 1) + 1 = substr(d.col2, 1) + 1
|
|
WHERE d.col1 in (SELECT id FROM cte1)
|
|
GROUP BY c.id, d.col2, d.name
|
|
)
|
|
SELECT
|
|
e.*
|
|
FROM cte2 e
|
|
JOIN cte2 m ON e.col2 = m.col1
|
|
JOIN cte n ON n.id =e.col2
|
|
ORDER BY 1, 2;
|
|
|
|
--
|
|
---- case7
|
|
--
|
|
explain(costs off)
|
|
WITH RECURSIVE cte as (
|
|
SELECT distinct a.* FROM rec_tb1 a JOIN rec_tb2 b ON a.id=b.parentID AND b.name not in (SELECT name FROM rec_tb3 c WHERE c.id=a.parentID AND
|
|
c.name is not null ) AND a.id<4
|
|
UNION ALL
|
|
SELECT d.* FROM cte e JOIN rec_tb3 d ON d.id=e.parentID AND d.parentID in (SELECT id FROM rec_tb1 WHERE e.id=rec_tb1.id) AND e.name like '%市%'
|
|
) SELECT * FROM cte ORDER BY 1,2,3;
|
|
|
|
WITH RECURSIVE cte as (
|
|
SELECT distinct a.* FROM rec_tb1 a JOIN rec_tb2 b ON a.id=b.parentID AND b.name not in (SELECT name FROM rec_tb3 c WHERE c.id=a.parentID AND
|
|
c.name is not null ) AND a.id<4
|
|
UNION ALL
|
|
SELECT d.* FROM cte e JOIN rec_tb3 d ON d.id=e.parentID AND d.parentID in (SELECT id FROM rec_tb1 WHERE e.id=rec_tb1.id) AND e.name like '%市%'
|
|
) SELECT * FROM cte ORDER BY 1,2,3;
|
|
|
|
explain(costs off)
|
|
WITH RECURSIVE tmp as
|
|
(
|
|
SELECT id, parentid, name, substr(name, 5) FROM (SELECT id,parentid ,name FROM rec_tb1)
|
|
UNION ALL
|
|
SELECT tmp.id, rec_tb3.parentid, tmp.name, substr(tmp.name, 5) FROM rec_tb3 JOIN tmp ON tmp.parentid = rec_tb3.id where (1,3,1) in
|
|
(SELECT id, parentid, ( (SELECT id FROM rec_tb2 where rec_tb4.id = rec_tb2.parentid ORDER BY 1 limit 1)) i_name FROM rec_tb4)
|
|
) SELECT * FROM tmp JOIN tmp tmp2 ON tmp.parentid=tmp2.id WHERE tmp.id in (1,2,3,4,5,6,7,8) ORDER BY 1,2,3,4,5,6,7,8;
|
|
|
|
WITH RECURSIVE tmp as
|
|
(
|
|
SELECT id, parentid, name, substr(name, 5) FROM (SELECT id,parentid ,name FROM rec_tb1)
|
|
UNION ALL
|
|
SELECT tmp.id, rec_tb3.parentid, tmp.name, substr(tmp.name, 5) FROM rec_tb3 JOIN tmp ON tmp.parentid = rec_tb3.id where (1,3,1) in
|
|
(SELECT id, parentid, ( (SELECT id FROM rec_tb2 where rec_tb4.id = rec_tb2.parentid ORDER BY 1 limit 1)) i_name FROM rec_tb4)
|
|
) SELECT * FROM tmp JOIN tmp tmp2 ON tmp.parentid=tmp2.id WHERE tmp.id in (1,2,3,4,5,6,7,8) ORDER BY 1,2,3,4,5,6,7,8;
|
|
|
|
--
|
|
--
|
|
drop table if exists rec_tb1;
|
|
create table rec_tb1 (id int ,parentID int ,name varchar(100)) partition by range(parentID)
|
|
(
|
|
PARTITION P1 VALUES LESS THAN(2),
|
|
PARTITION P2 VALUES LESS THAN(8),
|
|
PARTITION P3 VALUES LESS THAN(16),
|
|
PARTITION P4 VALUES LESS THAN(MAXVALUE)
|
|
);
|
|
insert into rec_tb1 values(1,0,'河南省');
|
|
insert into rec_tb1 values(2,1,'信阳市');
|
|
insert into rec_tb1 values(3,2,'淮滨县');
|
|
insert into rec_tb1 values(4,3,'芦集乡');
|
|
insert into rec_tb1 values(12,3,'邓湾乡');
|
|
insert into rec_tb1 values(13,3,'台头乡');
|
|
insert into rec_tb1 values(14,3,'谷堆乡');
|
|
insert into rec_tb1 values(8,2,'固始县');
|
|
insert into rec_tb1 values(9,8,'李店乡');
|
|
insert into rec_tb1 values(10,2,'息县');
|
|
insert into rec_tb1 values(11,10,'关店乡');
|
|
insert into rec_tb1 values(5,1,'安阳市');
|
|
insert into rec_tb1 values(6,5,'滑县');
|
|
insert into rec_tb1 values(7,6,'老庙乡');
|
|
insert into rec_tb1 values(15,1,'南阳市');
|
|
insert into rec_tb1 values(16,15,'方城县');
|
|
insert into rec_tb1 values(17,1,'驻马店市');
|
|
insert into rec_tb1 values(18,17,'正阳县');
|
|
|
|
drop table if exists rec_tb2;
|
|
create table rec_tb2 (id int ,parentID int ,name varchar(100)) partition by range(parentID)
|
|
(
|
|
PARTITION P1 VALUES LESS THAN(2),
|
|
PARTITION P2 VALUES LESS THAN(8),
|
|
PARTITION P3 VALUES LESS THAN(16),
|
|
PARTITION P4 VALUES LESS THAN(MAXVALUE)
|
|
);
|
|
insert into rec_tb2 values(1,0,'河南省');
|
|
insert into rec_tb2 values(2,1,'信阳市');
|
|
insert into rec_tb2 values(3,2,'淮滨县');
|
|
insert into rec_tb2 values(4,3,'芦集乡');
|
|
insert into rec_tb2 values(12,3,'邓湾乡');
|
|
insert into rec_tb2 values(13,3,'台头乡');
|
|
insert into rec_tb2 values(14,3,'谷堆乡');
|
|
insert into rec_tb2 values(8,2,'固始县');
|
|
insert into rec_tb2 values(9,8,'李店乡');
|
|
insert into rec_tb2 values(10,2,'息县');
|
|
insert into rec_tb2 values(11,10,'关店乡');
|
|
insert into rec_tb2 values(5,1,'安阳市');
|
|
insert into rec_tb2 values(6,5,'滑县');
|
|
insert into rec_tb2 values(7,6,'老庙乡');
|
|
insert into rec_tb2 values(15,1,'南阳市');
|
|
insert into rec_tb2 values(16,15,'方城县');
|
|
insert into rec_tb2 values(17,1,'驻马店市');
|
|
insert into rec_tb2 values(18,17,'正阳县');
|
|
|
|
explain(verbose on, costs off)
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select * from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2) order by tmp.parentid,1,2,3,4,5,6,7,8;
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select count(*) from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2);
|
|
|
|
explain(verbose on, costs off)
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select * from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2) order by tmp.parentid,1,2,3,4,5,6,7,8;
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select count(*) from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2);
|
|
|
|
drop table if exists rec_tb1;
|
|
create table rec_tb1 (id int ,parentID int ,name varchar(100)) ;
|
|
insert into rec_tb1 values(1,0,'河南省');
|
|
insert into rec_tb1 values(2,1,'信阳市');
|
|
insert into rec_tb1 values(3,2,'淮滨县');
|
|
insert into rec_tb1 values(4,3,'芦集乡');
|
|
insert into rec_tb1 values(12,3,'邓湾乡');
|
|
insert into rec_tb1 values(13,3,'台头乡');
|
|
insert into rec_tb1 values(14,3,'谷堆乡');
|
|
insert into rec_tb1 values(8,2,'固始县');
|
|
insert into rec_tb1 values(9,8,'李店乡');
|
|
insert into rec_tb1 values(10,2,'息县');
|
|
insert into rec_tb1 values(11,10,'关店乡');
|
|
insert into rec_tb1 values(5,1,'安阳市');
|
|
insert into rec_tb1 values(6,5,'滑县');
|
|
insert into rec_tb1 values(7,6,'老庙乡');
|
|
insert into rec_tb1 values(15,1,'南阳市');
|
|
insert into rec_tb1 values(16,15,'方城县');
|
|
insert into rec_tb1 values(17,1,'驻马店市');
|
|
insert into rec_tb1 values(18,17,'正阳县');
|
|
|
|
drop table if exists rec_tb2;
|
|
create table rec_tb2 (id int ,parentID int ,name varchar(100)) ;
|
|
insert into rec_tb2 values(1,0,'河南省');
|
|
insert into rec_tb2 values(2,1,'信阳市');
|
|
insert into rec_tb2 values(3,2,'淮滨县');
|
|
insert into rec_tb2 values(4,3,'芦集乡');
|
|
insert into rec_tb2 values(12,3,'邓湾乡');
|
|
insert into rec_tb2 values(13,3,'台头乡');
|
|
insert into rec_tb2 values(14,3,'谷堆乡');
|
|
insert into rec_tb2 values(8,2,'固始县');
|
|
insert into rec_tb2 values(9,8,'李店乡');
|
|
insert into rec_tb2 values(10,2,'息县');
|
|
insert into rec_tb2 values(11,10,'关店乡');
|
|
insert into rec_tb2 values(5,1,'安阳市');
|
|
insert into rec_tb2 values(6,5,'滑县');
|
|
insert into rec_tb2 values(7,6,'老庙乡');
|
|
insert into rec_tb2 values(15,1,'南阳市');
|
|
insert into rec_tb2 values(16,15,'方城县');
|
|
insert into rec_tb2 values(17,1,'驻马店市');
|
|
insert into rec_tb2 values(18,17,'正阳县');
|
|
|
|
explain(verbose on, costs off)
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select * from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2) order by tmp.parentid,1,2,3,4,5,6,7,8;
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select count(*) from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2);
|
|
|
|
explain(verbose on, costs off)
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select * from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2) order by tmp.parentid,1,2,3,4,5,6,7,8;
|
|
with recursive tmp as (
|
|
select id, parentid, name, substr(name, 5)
|
|
from rec_tb1 where id>4
|
|
union ALL
|
|
select tmp.id, rec_tb2.parentid, tmp.name, substr(tmp.name, 5)
|
|
from rec_tb2
|
|
inner join
|
|
tmp
|
|
on tmp.parentid = rec_tb2.id ), tmp2
|
|
AS (select id, parentid, name, substr(name, 5) name1 from tmp)
|
|
select count(*) from tmp,tmp2 where tmp.parentid = tmp2.parentid and tmp2.id not in (select parentid from tmp2);
|
|
|
|
reset search_path;
|
|
drop schema recursive_ref_recursive cascade; |