The SYSTRIGGERS table describes the database's triggers.
The following table shows the contents of the SYSTRIGGERS system table.
| Column Name | Type | Length | Nullable | Contents |
|---|---|---|---|---|
| TRIGGERID | CHAR | 36 | false | Unique identifier for the trigger |
| TRIGGERNAME | VARCHAR | 128 | false | Name of the trigger |
| SCHEMAID | CHAR | 36 | false | ID of the trigger's schema (join with SYSSCHEMAS.SCHEMAID) |
| CREATIONTIMESTAMP | TIMESTAMP | 29 | false | Time the trigger was created |
| EVENT | CHAR | 1 | false | 'U' for update, 'D' for delete, 'I' for insert |
| FIRINGTIME | CHAR | 1 | false | 'B' for before, 'A' for after |
| TYPE | CHAR | 1 | false | 'R' for row, 'S' for statement |
| STATE | CHAR | 1 | false | 'E' for enabled, 'D' for disabled |
| TABLEID | CHAR | 36 | false | ID of the table on which the trigger is defined |
| WHENSTMTID | CHAR | 36 | true | Used only if there is a WHEN clause (not yet supported) |
| ACTIONSTMTID | CHAR | 36 | true | ID of the stored prepared statement for the triggered-SQL-statement (join with SYSSTATEMENTS.STMTID) |
| REFERENCEDCOLUMNS | org.apache.derby.
catalog.
ReferencedColumns This class is not part of the public API. |
2,147,483,647 | true | Descriptor of the columns to be updated, if this trigger is an update trigger (that is, if the EVENT column contains 'U') |
| TRIGGERDEFINITION | LONG VARCHAR | 32,700 | true | Text of the action SQL statement |
| REFERENCINGOLD | BOOLEAN | 1 | true | Whether or not the OLDREFERENCINGNAME, if non-null, refers to the OLD row or table |
| REFERENCINGNEW | BOOLEAN | 1 | true | Whether or not the NEWREFERENCINGNAME, if non-null, refers to the NEW row or table |
| OLDREFERENCINGNAME | VARCHAR | 128 | true | Pseudoname as set using the REFERENCING OLD AS clause |
| NEWREFERENCINGNAME | VARCHAR | 128 | true | Pseudoname as set using the REFERENCING NEW AS clause |
Any SQL text that is part of a triggered-SQL-statement is compiled and stored in the SYSSTATEMENTS table. ACTIONSTMTID and WHENSTMTID are foreign keys that reference SYSSTATEMENTS.STMTID. The statements for a trigger are always in the same schema as the trigger.