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How to use sql Modification statement

2025-01-21 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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This article brings you about the use of sql modification statements. Most of the knowledge points are often used by everyone, so I will share them for you as a reference. Let's follow the editor and have a look.

Sql update statement is written as follows:

UPDATE table_nameSET column1=value1,column2=value2,...WHERE some_column=some_value

Note:

The WHERE clause specifies which records or records need to be updated. If you omit the WHERE clause, all records will be updated!

In MySQL, you can solve this problem by setting the built-in parameter sql_safe_updates. When this parameter is turned on, you must bring the where condition after the update statement, otherwise an error will be reported.

Opening method:

Set sql_safe_updates=1; means to enable this parameter.

On the use of sql modification sentence to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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