forked from huawei/openGauss-server
49 lines
1.4 KiB
SQL
49 lines
1.4 KiB
SQL
\timing on
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select pg_sleep(1);
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/*----------------test1 Locking succeeded. */
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select current_time;
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select * from hw_t1 where id1 = 3 for update WAIT 10;
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select current_time;
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--time delay
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select pg_sleep(2);--wait session1
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--time delay
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/*----------------test2 Locking failed. */
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select current_time;
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select * from hw_t1 where id1 = 3 for update WAIT 2;
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select current_time;
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--time delay
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select pg_sleep(2);--wait session1
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--time delay
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/*----------------test3 Locking succeeded. */
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select current_time;
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select * from (select * from t1 for update of t1 wait 10) as foo;
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select current_time;
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--time delay
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select pg_sleep(2);
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--time delay
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/*----------------test4 Locking failed. */
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select current_time;
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select * from (select * from t1 for update of t1 wait 2) as foo;
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select current_time;
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--time delay
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select pg_sleep(2);
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/*----------------test5 Locking update. */
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select current_time;
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select * from hw_t1 where id1 = 2 for update wait 2;
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select current_time;
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select pg_sleep(2);
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/*----------------test5_1 Locking update. */
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select current_time;
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select * from hw_t1 where id1 = 2 for update wait 2;
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select current_time;
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/*----------------test6 Locking delete. */
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select pg_sleep(2);
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select current_time;
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select * from hw_t1 where id1 = 3 for update WAIT 2;
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select current_time;
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select pg_sleep(2);
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/*----------------test6_1 Locking delete. */
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select current_time;
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select * from hw_t1 where id1 = 2 for update WAIT 2;
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select current_time;
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\timing off |