Difference between revisions of "SYSINDEXINFO"
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System Tables are system defined read-only tables. You can query these tables using the SELECT statement. | System Tables are system defined read-only tables. You can query these tables using the SELECT statement. | ||
| − | {| class="wikitable" | + | {| class="wikitable" width=100% |
!Column||Data Type||Width||Description | !Column||Data Type||Width||Description | ||
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|COLUMN_NAME||C||30||Column name | |COLUMN_NAME||C||30||Column name | ||
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| − | |ASC_OR_DESC||C||1||Column sort sequence, "A" is ascending, "D" is descending | + | |valign="top"|ASC_OR_DESC||valign="top"|C||valign="top"|1||Column sort sequence, "A" is ascending, "D" is descending |
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| − | |CARDINALITY||N||10||The number of rows in the table or the number of unique values in the index, depending on the index type | + | |valign="top"|CARDINALITY||valign="top"|N||valign="top"|10||The number of rows in the table or the number of unique values in the index, depending on the index type |
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| − | |PAGES||N||2||The number of pages used for the table or the number of pages used for the current index, depending on the index type | + | |valign="top"|PAGES||valign="top"|N||valign="top"|2||The number of pages used for the table or the number of pages used for the current index, depending on the index type |
|- | |- | ||
|FILTER_CONDITION||C||30||Filter condition | |FILTER_CONDITION||C||30||Filter condition | ||
Revision as of 07:41, 21 January 2013
Contents
Purpose
Description of a table’s indices and statistics
See Also
DATA TYPES, SELECT, SYSTEM TABLES
Description
System Tables are system defined read-only tables. You can query these tables using the SELECT statement.
| Column | Data Type | Width | Description |
|---|---|---|---|
| TABLE_CAT | C | 30 | Table catalog |
| TABLE_SCHEM | C | 30 | Table schema |
| TABLE_NAME | C | 30 | Table name |
| NON_UNIQUE | L | 1 | Can index values be non-unique? |
| INDEX_QUALIFIER | C | 30 | Index catalog |
| INDEX_NAME | C | 30 | Index name |
| TYPE | N | 2 | Index type |
| ORDINAL_POSITION | N | 3 | Column sequence number within index |
| COLUMN_NAME | C | 30 | Column name |
| ASC_OR_DESC | C | 1 | Column sort sequence, "A" is ascending, "D" is descending |
| CARDINALITY | N | 10 | The number of rows in the table or the number of unique values in the index, depending on the index type |
| PAGES | N | 2 | The number of pages used for the table or the number of pages used for the current index, depending on the index type |
| FILTER_CONDITION | C | 30 | Filter condition |
Example
SELECT * FROM sysindexinfo
