20 lines
986 B
MySQL
20 lines
986 B
MySQL
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-- COMPUTE STATS [db_name.]table_name [ ( column_list ) ] [TABLESAMPLE SYSTEM(percentage) [REPEATABLE(seed)]]
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COMPUTE STATS my_table;
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COMPUTE STATS my_table (column1, column2);
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COMPUTE STATS my_table TABLESAMPLE SYSTEM(20);
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COMPUTE STATS my_table (column1, column2) TABLESAMPLE SYSTEM(2) REPEATABLE(456);
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COMPUTE STATS my_table TABLESAMPLE SYSTEM(2) REPEATABLE(456);
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-- COMPUTE INCREMENTAL STATS [db_name.]table_name [PARTITION (partition_spec)]
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COMPUTE INCREMENTAL STATS my_table;
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COMPUTE INCREMENTAL STATS my_table PARTITION (date='2023-11-14');
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-- example
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compute stats t1;
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compute incremental stats int_partitions partition (x < 100);
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compute incremental stats int_partitions partition (x in (100, 150, 200));
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compute incremental stats int_partitions partition (x between 100 and 175);
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compute incremental stats int_partitions partition (x in (100, 150, 200) or x < 100);
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compute incremental stats int_partitions partition (x != 150);
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compute incremental stats item_partitioned;
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