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delete the duplicated item
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en-jin19 committed Mar 25, 2022
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Expand Up @@ -1708,9 +1708,3 @@ set tidb_slow_log_threshold = 200;
- 作用域:SESSION | GLOBAL
- 默认值:`ON`
- 这个变量用于控制计算窗口函数时是否采用高精度模式。
### `tidb_sysdate_is_now`(从 v6.0.0 版本开始引入)
- 作用域:SESSION | GLOBAL
- 默认值:`OFF`
- 这个变量用于控制 `SYSDATE` 函数能否替换为 `NOW` 函数,其效果与 MYSQL 中的 [`sysdate-is-now`](https://dev.mysql.com/doc/refman/8.0/en/server-options.html#option_mysqld_sysdate-is-now) 一致。

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