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Update docs/design/2021-10-15-analyze-predicate-columns.md
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Co-authored-by: Yuanjia Zhang <qw4990@163.com>
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xuyifangreeneyes and qw4990 authored Nov 16, 2021
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Expand Up @@ -22,7 +22,7 @@ We want to support the `ANALYZE` option to only collect the statistics of predic
ANALYZE TABLE TableNameList (ALL COLUMNS | PREDICATE COLUMNS | COLUMNS ColumnNameList)? AnalyzeOptionListOpt
ANALYZE TABLE TableName (PARTITION PartitionNameList)? (PREDICATE COLUMNS | COLUMNS ColumnNameList)? AnalyzeOptionListOpt
```
1. FOR `ANALYZE ALL COLUMNS`, the statistics of all columns would be collected.
1. For `ANALYZE ALL COLUMNS`, the statistics of all columns would be collected.
1. For `ANALYZE PREDICATE COLUMNS`, the statistics of predicate columns and indexed columns would be collected. If there is no predicate columns in record, TiDB would collect the statistics of all columns and give a warning to the client.
2. For `ANALYZE COLUMNS ColumnNameList`, the statistics of the columns in `ColumnNameList` and indexed columns would be collected.
3. By default, the statistics of all columns would be collected.
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