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Improve comment about query_id_enabled in queryjumblefuncs.c 

The comment was inexact because query_id_enabled will not be switched to
"true" even if compute_query_id is "on", unless a module requests for
it.

While on it, this adds a comment to mention that IsQueryIdEnabled()
should be used to check if query ID computation is enabled or not.

Author: Yugo Nagata
Reviewed-by: Julien Rouhaud
Discussion: https://postgr.es/m/20240209153823.e29a68cadb14225f1362a2cf@sraoss.co.jp
This commit is contained in:
Michael Paquier 2024-02-14 07:20:15 +09:00
parent 5ebc9c9017
commit f854dae888
1 changed files with 7 additions and 1 deletions
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8
src/backend/nodes/queryjumblefuncs.c
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@ -42,7 +42,13 @@
/* GUC parameters */ /* GUC parameters */
int compute_query_id = COMPUTE_QUERY_ID_AUTO; int compute_query_id = COMPUTE_QUERY_ID_AUTO;
/* True when compute_query_id is ON, or AUTO and a module requests them */ /*
* True when compute_query_id is ON or AUTO, and a module requests them.
*
* Note that IsQueryIdEnabled() should be used instead of checking
* query_id_enabled or compute_query_id directly when we want to know
* whether query identifiers are computed in the core or not.
*/
bool query_id_enabled = false; bool query_id_enabled = false;
static void AppendJumble(JumbleState *jstate, static void AppendJumble(JumbleState *jstate,