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sql in operator usage
The IN operator in SQL is a query operator used to specify multiple values in a condition. This topic contains various articles related to sql in, and everyone can experience it for free.
sql in operator usageSQL in operator usage: 1. Single column matching, you can use the IN operator to match multiple values in a column; 2. Multi-column matching, the IN operator can also be used to match values in multiple columns; 3. Subquery, The IN operator can also be used with a subquery, which is a query statement nested within the main query.
Let's talk about how to use the MySQL in operatorMySQL's in operator can be used to determine whether a value exists in a set, which can be an array. In MySQL, you can use the IN operator to query whether a column contains certain values, such as: ```SELECT * FROM table1 WHERE column1 IN (value1, value2, value3)``` where value1, value2 and value3 are The values to be queried can be constants or variables.
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