Difference between revisions of "SYSCROSSREFERENCE"
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==Purpose== | ==Purpose== | ||
Description of how one table imports the keys of another table | Description of how one table imports the keys of another table | ||
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==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]] | ||
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==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. | ||
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{| class="wikitable" | {| class="wikitable" | ||
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==Example== | ==Example== | ||
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</code> | </code> | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:SQL]] | [[Category:SQL]] | ||
[[Category:System Tables]] | [[Category:System Tables]] | ||
Revision as of 10:54, 7 December 2012
Contents
Purpose
Description of how one table imports the keys of another table
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 |
|---|---|---|---|
| PKTABLE_CAT | C | 30 | Primary key table catalog |
| PKTABLE_SCHEM | C | 30 | Primary key table schema |
| PKTABLE_NAME | C | 30 | Primary key table name |
| PKCOLUMN_NAME | C | 30 | Primary key column name |
| FKTABLE_CAT | C | 30 | Foreign key table catalog being exported |
| FKTABLE_SCHEM | C | 30 | Foreign key table schema being exported |
| FKTABLE_NAME | C | 30 | Foreign key table name being exported |
| FKCOLUMN_NAME | C | 30 | Foreign key column name being exported |
| KEY_SEQ | N | 2 | Sequence number within foreign key |
| UPDATE_RULE | N | 2 | What happens to foreign key when primary is updated |
| DELETE_RULE | N | 2 | What happens to the foreign key when primary is deleted |
| FK_NAME | C | 30 | Foreign key name |
| PK_NAME | C | 30 | Primary key name |
| DEFERRABILITY | N | 2 | Can the evaluation of foreign key constraints be deferred until commit? |
Example
SELECT * FROM syscrossreference
