Difference between revisions of "SYSINDEXINFO"
From Lianjapedia
Yvonne.milne (Talk | contribs) m (1 revision: SQL) |
Helen.george (Talk | contribs) |
||
| Line 1: | Line 1: | ||
==Purpose== | ==Purpose== | ||
Description of a table’s indices and statistics | Description of a table’s indices and statistics | ||
| − | |||
==See Also== | ==See Also== | ||
[[SQL Data Types|DATA TYPES]], [[SQL SELECT|SELECT]], [[SQL System Tables|SYSTEM TABLES]] | [[SQL Data Types|DATA TYPES]], [[SQL SELECT|SELECT]], [[SQL System Tables|SYSTEM TABLES]] | ||
| − | |||
==Description== | ==Description== | ||
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" | ||
| Line 41: | Line 38: | ||
|- | |- | ||
|} | |} | ||
| − | |||
==Example== | ==Example== | ||
| Line 48: | Line 44: | ||
</code> | </code> | ||
| − | |||
| − | |||
| − | |||
[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:SQL]] | [[Category:SQL]] | ||
[[Category:System Tables]] | [[Category:System Tables]] | ||
Revision as of 10:56, 7 December 2012
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
