MySQL search: WHERE multi-condition, mysqlwhere
WHERE can be searched by multiple conditions.
The products table is as follows:
After a WHERE, search by and based on two conditions and three conditions:
B uses or to search for multiple conditions
C. Find out the products with a price greater than 10 produced by vend_id of 1002 or 1003. here we need to use and or for combination:
However, from the above results, this output is not correct because AND has a higher priority than OR. Therefore, this statement is used to retrieve all products with vend_id = 1002, for products with vend_id = 1003 and a price greater than 10, you need to use () to rewrite this sentence:
D. Use IN to show multiple search values. The function is similar to OR. However, when there are multiple values, the syntax for using IN is more intuitive.
The e NOT operator denies the following conditions:
IN MySQL, NOT can be used to retrieve reverse IN, BETWEEN, and EXISTS, which is different from other DBMS systems.
Mysql multi-condition Query
Select * from table name where Condition 1 and condition 2 and Condition 3
Maximum number of Where conditions in MySql
The length of the limit is unclear, but you can write it if it is enough.