column_statistics
Overview
Column statistics
Database
__internal_schema
Table Information
| Column Name | Type | Description |
|---|---|---|
| id | varchar(4096) | Unique ID |
| catalog_id | varchar(64) | ID of the Catalog |
| db_id | varchar(64) | ID of the Database |
| tbl_id | varchar(64) | ID of the Table |
| idx_id | varchar(64) | ID of the Index |
| col_id | varchar(64) | ID of the column, currently storing column names |
| part_id | varchar(64) | ID of the Partition, always empty |
| count | bigint | Number of rows |
| ndv | bigint | Number of distinct values |
| null_count | bigint | Number of NULLs |
| min | varchar(65533) | Minimum value |
| max | varchar(65533) | Maximum value |
| data_size_in_bytes | bigint | Data size in bytes |
| update_time | datetime | Update time of current statistics |