diff options
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 19d52d72175..a426aeba020 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: parsenodes.h,v 1.203 2002/08/30 19:23:20 tgl Exp $ + * $Id: parsenodes.h,v 1.204 2002/08/31 22:10:47 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -233,14 +233,13 @@ typedef struct NullTest NullTestType nulltesttype; /* IS NULL, IS NOT NULL */ } NullTest; -/* ---------------- +/* * BooleanTest * * BooleanTest represents the operation of determining whether a boolean * is TRUE, FALSE, or UNKNOWN (ie, NULL). All six meaningful combinations * are supported. Note that a NULL input does *not* cause a NULL result. * The appropriate test is performed and returned as a boolean Datum. - * ---------------- */ typedef enum BoolTestType @@ -256,6 +255,29 @@ typedef struct BooleanTest } BooleanTest; /* + * ConstraintTest + * + * ConstraintTest represents the operation of testing a value to see whether + * it meets a constraint. If so, the input value is returned as the result; + * if not, an error is raised. + */ + +typedef enum ConstraintTestType +{ + CONSTR_TEST_NOTNULL, + CONSTR_TEST_CHECK +} ConstraintTestType; + +typedef struct ConstraintTest +{ + NodeTag type; + Node *arg; /* input expression */ + ConstraintTestType testtype; /* test type */ + char *name; /* name of constraint (for error msgs) */ + Node *check_expr; /* for CHECK test, a boolean expression */ +} ConstraintTest; + +/* * ColumnDef - column definition (used in various creates) * * If the column has a default value, we may have the value expression |