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Diffstat (limited to 'src/backend/utils/adt/timestamp.c')
| -rw-r--r-- | src/backend/utils/adt/timestamp.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/backend/utils/adt/timestamp.c b/src/backend/utils/adt/timestamp.c index e0ef2f7861..1b0effa924 100644 --- a/src/backend/utils/adt/timestamp.c +++ b/src/backend/utils/adt/timestamp.c @@ -5168,6 +5168,23 @@ timestamp_izone(PG_FUNCTION_ARGS) PG_RETURN_TIMESTAMPTZ(result); } /* timestamp_izone() */ +/* TimestampTimestampTzRequiresRewrite() + * + * Returns false if the TimeZone GUC setting causes timestamp_timestamptz and + * timestamptz_timestamp to be no-ops, where the return value has the same + * bits as the argument. Since project convention is to assume a GUC changes + * no more often than STABLE functions change, the answer is valid that long. + */ +bool +TimestampTimestampTzRequiresRewrite(void) +{ + long offset; + + if (pg_get_timezone_offset(session_timezone, &offset) && offset == 0) + PG_RETURN_BOOL(false); + PG_RETURN_BOOL(true); +} + /* timestamp_timestamptz() * Convert local timestamp to timestamp at GMT */ |