update

Signed-off-by: “EricZequan” <[email protected]>
pingcap · Dec 13, 2024 · 838b692 · 838b692
1 parent 76f0fbc
commit 838b692
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/optimizer-fix-controls.md b/optimizer-fix-controls.md
@@ -76,3 +76,9 @@ SET SESSION tidb_opt_fix_control = '44262:ON,44389:ON';
 - Default value: `OFF`
 - Possible values: `ON`, `OFF`
 - This variable controls whether the optimizer explores enforced plans during query optimization after finding an unenforced plan.
+
+### [`56318`](https://github.com/pingcap/tidb/issues/56318) <span class="version-mark">New in v7.5.0</span>
+
+- Default value: `ON`
+- Possible values: `ON`, `OFF`
+- This variable controls whether to avoid calculating the heavy expression used in ORDER BY stmt twice。