diff options
Diffstat (limited to 'src/backend/commands/tablecmds.c')
| -rw-r--r-- | src/backend/commands/tablecmds.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index ce532e9e07a..7c7f57874a1 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -12731,8 +12731,29 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, RememberConstraintForRebuilding(foundObject.objectId, tab); break; + case OCLASS_PROC: + + /* + * A new-style SQL function can depend on a column, if that + * column is referenced in the parsed function body. Ideally + * we'd automatically update the function by deparsing and + * reparsing it, but that's risky and might well fail anyhow. + * FIXME someday. + */ + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot alter type of a column used by a function or procedure"), + errdetail("%s depends on column \"%s\"", + getObjectDescription(&foundObject, false), + colName))); + break; + case OCLASS_REWRITE: - /* XXX someday see if we can cope with revising views */ + + /* + * View/rule bodies have pretty much the same issues as + * function bodies. FIXME someday. + */ ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("cannot alter type of a column used by a view or rule"), @@ -12748,9 +12769,9 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, * specified as an update target, or because the column is * used in the trigger's WHEN condition. The first case would * not require any extra work, but the second case would - * require updating the WHEN expression, which will take a - * significant amount of new code. Since we can't easily tell - * which case applies, we punt for both. FIXME someday. + * require updating the WHEN expression, which has the same + * issues as above. Since we can't easily tell which case + * applies, we punt for both. FIXME someday. */ ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), @@ -12822,7 +12843,6 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, RememberStatisticsForRebuilding(foundObject.objectId, tab); break; - case OCLASS_PROC: case OCLASS_TYPE: case OCLASS_CAST: case OCLASS_COLLATION: |