41 lines
1.1 KiB
Markdown
41 lines
1.1 KiB
Markdown
|
|
ANALYZE
|
|
=======
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
``` sql
|
|
ANALYZE table_name [ WITH ( property_name = expression [, ...] ) ]
|
|
```
|
|
|
|
Description
|
|
-----------
|
|
|
|
Collects table and column statistics for a given table.
|
|
|
|
The optional `WITH` clause can be used to provide connector-specific properties. To list all available properties, run the following query:
|
|
|
|
SELECT * FROM system.metadata.analyze_properties
|
|
|
|
Currently, this statement is only supported by the [Hive connector](../connector/hive.md).
|
|
|
|
Examples
|
|
--------
|
|
|
|
Analyze table `web` to collect table and column statistics:
|
|
|
|
ANALYZE web;
|
|
|
|
Analyze table `stores` in catalog `hive` and schema `default`:
|
|
|
|
ANALYZE hive.default.stores;
|
|
|
|
Analyze partitions `'1992-01-01', '1992-01-02'` from a Hive partitioned table `sales`:
|
|
|
|
ANALYZE hive.default.sales WITH (partitions = ARRAY[ARRAY['1992-01-01'], ARRAY['1992-01-02']]);
|
|
|
|
Analyze partitions with complex partition key (`state` and `city` columns) from a Hive partitioned table `customers`:
|
|
|
|
ANALYZE hive.default.customers WITH (partitions = ARRAY[ARRAY['CA', 'San Francisco'], ARRAY['NY', 'NY']]);
|