From d9c0eac542237e90526d1ec2f8e465f7d26da0c7 Mon Sep 17 00:00:00 2001 From: Ti Chi Robot Date: Mon, 11 Dec 2023 17:36:18 +0800 Subject: [PATCH] fix typo (#15647) (#15649) --- system-variables.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/system-variables.md b/system-variables.md index b21284d2a953a..599ec3fd7b556 100644 --- a/system-variables.md +++ b/system-variables.md @@ -718,9 +718,9 @@ Constraint checking is always performed in place for pessimistic transactions (d - Type: Boolean - Default value: `OFF` - This variable is used to control whether multiple columns or indexes can be altered in one `ALTER TABLE` statement. When the value of this variable is `ON`, only the following multi-schema changes are supported: - - Add multiple columns. For example, `ATLER TABLE t ADD COLUMN c1 INT, ADD COLUMN c2 INT;`. - - Drop multiple columns. For example, `ATLER TABLE t DROP COLUMN c1, DROP COLUMN c2;`. - - Drop multiple indexes. For example, `ATLER TABLE t DROP INDEX i1, DROP INDEX i2;`. + - Add multiple columns. For example, `ALTER TABLE t ADD COLUMN c1 INT, ADD COLUMN c2 INT;`. + - Drop multiple columns. For example, `ALTER TABLE t DROP COLUMN c1, DROP COLUMN c2;`. + - Drop multiple indexes. For example, `ALTER TABLE t DROP INDEX i1, DROP INDEX i2;`. - Drop a column covered by a single-column index. For example, `ALTER TABLE t DROP COLUMN c1`, in which the schema contains `INDEX idx(c1)`. ### tidb_enable_cascades_planner