diff options
Diffstat (limited to 'src/include/nodes/primnodes.h')
| -rw-r--r-- | src/include/nodes/primnodes.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h index ec0ad4235c..ae0df7e441 100644 --- a/src/include/nodes/primnodes.h +++ b/src/include/nodes/primnodes.h @@ -10,7 +10,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: primnodes.h,v 1.72 2002/12/12 15:49:40 tgl Exp $ + * $Id: primnodes.h,v 1.73 2002/12/12 20:35:16 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -599,15 +599,19 @@ typedef struct ConstraintTest } ConstraintTest; /* - * Placeholder node for the value to be processed by a domains - * check constraint. This is effectively like a Param; could we use - * a Param node instead? + * Placeholder node for the value to be processed by a domain's check + * constraint. This is effectively like a Param, but can be implemented more + * simply since we need only one replacement value at a time. + * + * Note: the typeId/typeMod will be set from the domain's base type, not + * the domain itself. This is because we shouldn't consider the value to + * be a member of the domain if we haven't yet checked its constraints. */ typedef struct ConstraintTestValue { Expr xpr; - Oid typeId; - int32 typeMod; + Oid typeId; /* type for substituted value */ + int32 typeMod; /* typemod for substituted value */ } ConstraintTestValue; |