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What is the function of the where phrase in the sql command

Shulou Source: shulou.com Published: 2022-05-31 23:25:23 11月07日 Update

Editor to share with you what the function of the where phrase in the sql command is, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

The function of the where phrase in the sql command is to specify the criteria for selection, to filter records, and to add a WHERE clause to the SELECT statement if you need to conditionally select data from the table.

The WHERE clause is used to filter records. The WHERE clause is used to extract records that meet the specified criteria.

To conditionally select data from a table, you can add a WHERE clause to the SELECT statement.

SQL WHERE syntax

SELECT column_name,column_nameFROM table_nameWHERE column_name operator value

The following operators can be used in the WHERE clause:

Operator description = equal to not equal > greater than = greater than or equal

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