MySQL search: WHERE, mysql search where

MySQL search: WHERE, mysql search where

You can use the where condition to search by specifying a Search Condition in MySQL.

In a SELECT statement, data is filtered based on the conditions specified in the WHERE substatement. The WHERE substatement is given after the table name.

The product table is as follows:

A. Search for rows with a price equal to 2.50.

There are the following types of operators after the WHERE statement. With these operators, you can filter the corresponding conditions:

Operator	Description
=	Equal
<>	Not equal
! =	Not equal
<	Less
<=	Less than or equal
>	Greater
> =	Greater than or equal
BETWEEN	Between two values

B character search

C search for all products with prices less than 10:

D. Search value range

I want to sort and display the results after the search, but this does not seem to work. It may be that after SELECT, only one clause can be followed:

Mysql advanced Query

Stored Procedure:
Drop procedure if exists p_1;
DELIMITER $
Create procedure 'mysql'. 'P _ 1 '()
BEGIN
DECLARE num int default 0;
Select COUNT (*) INTO num from TableName where department Name = Department and Time BetWeen Time 1 and Time 2;

IF num> 0 THEN
// Exact Query
ELSE
// Fuzzy search
End if;

END $

DELIMITER;

MYSQL statement. If you want to search for a field that contains a string, how can you write it?

Select * from table where A like '% BBB %' and condition; execute the following SQL statement to check whether the returned value exists.

Update table set A = replace ('bbb ', '', A) where A like' % BBB % 'and condition;

Oh ..
In this case, we can only extract it and split it into Arrays for judgment.