diff options
Diffstat (limited to 'src/backend/rewrite/rewriteHandler.c')
| -rw-r--r-- | src/backend/rewrite/rewriteHandler.c | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/src/backend/rewrite/rewriteHandler.c b/src/backend/rewrite/rewriteHandler.c index 92661abae23..da78f027751 100644 --- a/src/backend/rewrite/rewriteHandler.c +++ b/src/backend/rewrite/rewriteHandler.c @@ -1228,25 +1228,28 @@ build_column_default(Relation rel, int attrno) } /* - * Scan to see if relation has a default for this column. + * If relation has a default for this column, fetch that expression. */ - if (att_tup->atthasdef && rd_att->constr && - rd_att->constr->num_defval > 0) + if (att_tup->atthasdef) { - AttrDefault *defval = rd_att->constr->defval; - int ndef = rd_att->constr->num_defval; - - while (--ndef >= 0) + if (rd_att->constr && rd_att->constr->num_defval > 0) { - if (attrno == defval[ndef].adnum) + AttrDefault *defval = rd_att->constr->defval; + int ndef = rd_att->constr->num_defval; + + while (--ndef >= 0) { - /* - * Found it, convert string representation to node tree. - */ - expr = stringToNode(defval[ndef].adbin); - break; + if (attrno == defval[ndef].adnum) + { + /* Found it, convert string representation to node tree. */ + expr = stringToNode(defval[ndef].adbin); + break; + } } } + if (expr == NULL) + elog(ERROR, "default expression not found for attribute %d of relation \"%s\"", + attrno, RelationGetRelationName(rel)); } /* |