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.
Name | 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 |