Each row of the SYSTAB system view describes one table or view in the database. Additional information for views can be found in the SYSVIEW system view. The underlying system table for this view is ISYSTAB.
Column name | Data type | Description |
---|---|---|
table_id | UNSIGNED INT | Each table is assigned a unique number (the table number). |
dbspace_id | SMALLINT | A value indicating which dbspace contains the table. |
count | UNSIGNED BIGINT | The number of rows in the table or materialized view. This value is updated during each successful checkpoint. This number is used to optimize database access. The count is always 0 for a non-materialized view or remote table. |
creator | UNSIGNED INT | The user number of the owner of the table or view. |
table_page_count | INTEGER | The total number of main pages used by the underlying table. |
ext_page_count | INTEGER | The total number of extension pages used by the underlying table. |
commit_action | INTEGER | For global temporary tables, 0 indicates that the ON COMMIT PRESERVE ROWS clause was specified when the table was created, 1 indicates that the ON COMMIT DELETE ROWS clause was specified when the table was created (the default behavior for temporary tables), and 3 indicates that the NOT TRANSACTIONAL clause was specified when the table was created. For non-temporary tables, commit_action is always 0. |
share_type | INTEGER | For global temporary tables, 4 indicates that the SHARE BY ALL clause was specified when the table was created, and 5 indicates that the SHARE BY ALL clause was not specified when the table was created. For non-temporary tables, share_type is always 5 because the SHARE BY ALL clause cannot be specified when creating non-temporary tables. |
object_id | UNSIGNED BIGINT | The object ID of the table. |
last_modified_at | TIMESTAMP | The time at which the data in the table was last modified. This column is only updated at checkpoint time. |
last_modified_tsn | UNSIGNED BIGINT | A sequence number assigned to the transaction that modified the table. This column is only updated at checkpoint time. |
file_id | SMALLINT | DEPRECATED. This column is present in SYSVIEW, but not in the underlying system table ISYSTAB. The contents of this column is the same as dbspace_id and is provided for compatibility. Use dbspace_id instead. |
table_name | CHAR(128) | The name of the table or view. One creator cannot have two tables or views with the same name. |
table_type | TINYINT |
The type of table or view. Values include:
|
replicate | CHAR(1) | This value is for internal use only. |
server_type | TINYINT |
The location of the data for the underlying table. Values include:
|
tab_page_list | LONG VARBIT | For internal use only. The set of pages that contain information for the table, expressed as a bitmap. |
ext_page_list | LONG VARBIT | For internal use only. The set of pages that contain row extensions and large object (LOB) pages for the table, expressed as a bitmap. |
pct_free | UNSIGNED INT | The PCT_FREE specification for the table, if one has been specified; otherwise, NULL. |
clustered_index_id | UNSIGNED INT | The ID of the clustered index for the table. If none of the indexes are clustered, then this field is NULL. |
encrypted | CHAR(1) | Whether the table or materialized view is encrypted. |
table_type_str | CHAR(9) |
Readable value for table_type. Values include:
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