GS_COLUMN_TABLE_IO_STAT
GS_COLUMN_TABLE_IO_STAT displays the I/O of all column-store tables of the database on the current node. The value of each statistical column is the accumulated value since the instance was started.
Column | Type | Description |
|---|---|---|
schemaname | Name | Namespace of a table |
relname | Name | Table name |
heap_read | Bigint | Number of blocks logically read in the heap |
heap_hit | Bigint | Number of block hits in the heap |
idx_read | Bigint | Number of blocks logically read in the index |
idx_hit | Bigint | Number of block hits in the index |
cu_read | Bigint | Number of logical reads in the Compression Unit |
cu_hit | Bigint | Number of hits in the Compression Unit |
cidx_read | Bigint | Number of indexes logically read in the Compression Unit |
cidx_hit | Bigint | Number of index hits in the Compression Unit |
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