From dc30de1236f32d316e86761db45ab89de7451e6f Mon Sep 17 00:00:00 2001 From: Morgan Tocker Date: Mon, 10 Sep 2018 10:12:05 -0600 Subject: [PATCH] Improved consistency of variable descriptions s/system variable/global variable/ s/user variable/session variable/ --- op-guide/history-read.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/op-guide/history-read.md b/op-guide/history-read.md index 3d1989b95e25a..5457874cdb8d7 100644 --- a/op-guide/history-read.md +++ b/op-guide/history-read.md @@ -107,7 +107,7 @@ Pay special attention to the following two variables: Query OK, 0 rows affected (0.00 sec) ``` - > **Note:** You should use `@@` instead of `@` before `tidb_snapshot` because `@@` is used to denote the system variable while `@` is used to denote the user variable. + > **Note:** You should use `@@` instead of `@` before `tidb_snapshot` because `@@` is used to denote the global variable while `@` is used to denote the session variable. **Result:** The read from the following statement is the data before the update operation, which is the history data. @@ -142,4 +142,4 @@ Pay special attention to the following two variables: 3 rows in set (0.00 sec) ``` - > **Note:** You should use `@@` instead of `@` before `tidb_snapshot` because `@@` is used to denote the system variable while `@` is used to denote the user variable. + > **Note:** You should use `@@` instead of `@` before `tidb_snapshot` because `@@` is used to denote the global variable while `@` is used to denote the session variable.