How to check the date type behind where in sql-SQL-php.cn

When querying date types in the SQL WHERE clause, you can use the following operators: equal to, not equal to, greater than, less than, greater than or equal to, less than or equal to, BETWEEN, NOT BETWEEN.

How to check the date type behind where in sql

Query method of date type in WHERE clause in SQL

Get straight to the point:
In SQL, the following operators can be used to query date types in the WHERE clause:

Equal to (=)
Not equal to (<>)
Greater than (>)
Less than (<)
Greater than or equal to (>=)
Less than or equal to (<=)
BETWEEN (within the specified range)
NOT BETWEEN (not within the specified range)

Detailed expansion:

1. Equal to (=)
The most direct comparison method, the query date is equal to the specified date.
For example:WHERE date_column = '2023-03-08'

2. Not equal to (<>)
Query date is not equal to Specify the date.
For example:WHERE date_column <> '2023-03-08'

3. Greater than (>)
The query date is greater than the specified date.
For example:WHERE date_column > '2023-03-08'

4. Less than (<)
The query date is less than the specified date.
For example:WHERE date_column < '2023-03-08'

5. Greater than or equal to (>=)
Query date is greater than or equal to the specified date.
For example:WHERE date_column >= '2023-03-08'

6. Less than or equal to (<=)
Query date less than or equal to the specified date.
For example:WHERE date_column <= '2023-03-08'

7. BETWEEN (within the specified range)
The query date is in Between two specified dates (inclusive of boundaries).
For example:WHERE date_column BETWEEN '2023-03-01' AND '2023-03-08'

8. NOT BETWEEN (not within the specified range)
The query date is not between two specified dates (excluding boundaries).
For example:WHERE date_column NOT BETWEEN '2023-03-01' AND '2023-03-08'

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