diff options
Diffstat (limited to 'src/backend/commands/copy.c')
| -rw-r--r-- | src/backend/commands/copy.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c index 64382d2a02f..cd2446f8acb 100644 --- a/src/backend/commands/copy.c +++ b/src/backend/commands/copy.c @@ -2947,6 +2947,9 @@ CopyFrom(CopyState cstate) * Can't support multi-inserts if there are any volatile function * expressions in WHERE clause. Similarly to the trigger case above, * such expressions may query the table we're inserting into. + * + * Note: the whereClause was already preprocessed in DoCopy(), so it's + * okay to use contain_volatile_functions() directly. */ insertMethod = CIM_SINGLE; } @@ -3495,7 +3498,8 @@ BeginCopyFrom(ParseState *pstate, * known to be safe for use with the multi-insert * optimization. Hence we use this special case function * checker rather than the standard check for - * contain_volatile_functions(). + * contain_volatile_functions(). Note also that we already + * ran the expression through expression_planner(). */ if (!volatile_defexprs) volatile_defexprs = contain_volatile_functions_not_nextval((Node *) defexpr); |