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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2023-04-15 12:01:39 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2023-04-15 12:01:39 -0400 |
| commit | 9b104a27c72754e9a6a8043ad7e710c8c386a8db (patch) | |
| tree | 6ce329829923ea26af99bffeeffaa1cc4dc87598 | |
| parent | e9884e9921862d2470bbccf39e3ed140a325afd3 (diff) | |
| download | postgresql-9b104a27c72754e9a6a8043ad7e710c8c386a8db.tar.gz postgresql-9b104a27c72754e9a6a8043ad7e710c8c386a8db.zip | |
Fix assignment to array of domain over composite, redux.
Commit 3e310d837 taught isAssignmentIndirectionExpr() to look through
CoerceToDomain nodes. That's not sufficient, because since commit
04fe805a1 it's been possible for the planner to simplify
CoerceToDomain to RelabelType when the domain has no constraints
to enforce. So we need to look through RelabelType too.
Per bug #17897 from Alexander Lakhin. Although 3e310d837 was
back-patched to v11, it seems sufficient to apply this change
to v12 and later, since 04fe805a1 came in in v12.
Dmitry Dolgov
Discussion: https://postgr.es/m/17897-4216c546c3874044@postgresql.org
| -rw-r--r-- | src/backend/executor/execExpr.c | 10 | ||||
| -rw-r--r-- | src/test/regress/expected/domain.out | 9 | ||||
| -rw-r--r-- | src/test/regress/sql/domain.sql | 4 |
3 files changed, 21 insertions, 2 deletions
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c index e2916e35c81..e6053482834 100644 --- a/src/backend/executor/execExpr.c +++ b/src/backend/executor/execExpr.c @@ -3132,8 +3132,8 @@ ExecInitSubscriptingRef(ExprEvalStep *scratch, SubscriptingRef *sbsref, * trees in which each level of assignment has its own CaseTestExpr, and the * recursive structure appears within the newvals or refassgnexpr field. * There is an exception, though: if the array is an array-of-domain, we will - * have a CoerceToDomain as the refassgnexpr, and we need to be able to look - * through that. + * have a CoerceToDomain or RelabelType as the refassgnexpr, and we need to + * be able to look through that. */ static bool isAssignmentIndirectionExpr(Expr *expr) @@ -3160,6 +3160,12 @@ isAssignmentIndirectionExpr(Expr *expr) return isAssignmentIndirectionExpr(cd->arg); } + else if (IsA(expr, RelabelType)) + { + RelabelType *r = (RelabelType *) expr; + + return isAssignmentIndirectionExpr(r->arg); + } return false; } diff --git a/src/test/regress/expected/domain.out b/src/test/regress/expected/domain.out index 8af2b89680a..a9a21ff5b95 100644 --- a/src/test/regress/expected/domain.out +++ b/src/test/regress/expected/domain.out @@ -556,6 +556,15 @@ table dcomptable; {"(1,5)"} (1 row) +-- if there's no constraints, a different code path is taken: +alter domain dcomptype drop constraint dcomptype_check; +update dcomptable set f1[1].cf1 = -1; -- now ok +table dcomptable; + f1 +------------ + {"(-1,5)"} +(1 row) + drop table dcomptable; drop type comptype cascade; NOTICE: drop cascades to type dcomptype diff --git a/src/test/regress/sql/domain.sql b/src/test/regress/sql/domain.sql index f2ca1fb675a..b735d9bfe19 100644 --- a/src/test/regress/sql/domain.sql +++ b/src/test/regress/sql/domain.sql @@ -288,6 +288,10 @@ table dcomptable; update dcomptable set f1[1].cf1 = -1; -- fail update dcomptable set f1[1].cf1 = 1; table dcomptable; +-- if there's no constraints, a different code path is taken: +alter domain dcomptype drop constraint dcomptype_check; +update dcomptable set f1[1].cf1 = -1; -- now ok +table dcomptable; drop table dcomptable; drop type comptype cascade; |