diff options
Diffstat (limited to 'src/backend/commands/copyfrom.c')
| -rw-r--r-- | src/backend/commands/copyfrom.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/commands/copyfrom.c b/src/backend/commands/copyfrom.c index 81aef4aca8a..376d9e4c4a7 100644 --- a/src/backend/commands/copyfrom.c +++ b/src/backend/commands/copyfrom.c @@ -887,6 +887,9 @@ CopyFrom(CopyFromState 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; } @@ -1614,7 +1617,8 @@ 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); |