diff options
Diffstat (limited to 'src/backend/parser/parse_node.c')
| -rw-r--r-- | src/backend/parser/parse_node.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/backend/parser/parse_node.c b/src/backend/parser/parse_node.c index 6ffbd767275..e0ea43a8104 100644 --- a/src/backend/parser/parse_node.c +++ b/src/backend/parser/parse_node.c @@ -226,6 +226,18 @@ transformArrayType(Oid *arrayType, int32 *arrayTypmod) */ *arrayType = getBaseTypeAndTypmod(*arrayType, arrayTypmod); + /* + * We treat int2vector and oidvector as though they were domains over + * int2[] and oid[]. This is needed because array slicing could create an + * array that doesn't satisfy the dimensionality constraints of the + * xxxvector type; so we want the result of a slice operation to be + * considered to be of the more general type. + */ + if (*arrayType == INT2VECTOROID) + *arrayType = INT2ARRAYOID; + else if (*arrayType == OIDVECTOROID) + *arrayType = OIDARRAYOID; + /* Get the type tuple for the array */ type_tuple_array = SearchSysCache1(TYPEOID, ObjectIdGetDatum(*arrayType)); if (!HeapTupleIsValid(type_tuple_array)) @@ -263,6 +275,7 @@ transformArrayType(Oid *arrayType, int32 *arrayTypmod) * For both cases, if the source array is of a domain-over-array type, * the result is of the base array type or its element type; essentially, * we must fold a domain to its base type before applying subscripting. + * (Note that int2vector and oidvector are treated as domains here.) * * pstate Parse state * arrayBase Already-transformed expression for the array as a whole |