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ZhangYu0123 1d9b3aeee7 [Doc] Repair document format (#4336 )

The error format '##keyword' in a lot of docs. This pr is to repair document format. #4335

2020-08-13 23:39:41 +08:00

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title, language

title	language
repeat	zh-CN

repeat

description

Syntax

`VARCHAR repeat(VARCHAR str, INT count)

将字符串 str 重复 count 次输出，count 小于1时返回空串，str，count 任一为NULL时，返回 NULL

example

mysql> SELECT repeat("a", 3);
+----------------+
| repeat('a', 3) |
+----------------+
| aaa            |
+----------------+

mysql> SELECT repeat("a", -1);
+-----------------+
| repeat('a', -1) |
+-----------------+
|                 |
+-----------------+

keyword

REPEAT,

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