if condition in mysql select query code example

Example 1: mysql select else if

select id, 
    (
    CASE 
        WHEN qty_1 <= '23' THEN price
        WHEN '23' > qty_1 && qty_2 <= '23' THEN price_2
        WHEN '23' > qty_2 && qty_3 <= '23' THEN price_3
        WHEN '23' > qty_3 THEN price_4
        ELSE 1
    END) AS total
 from product;

Example 2: select with condition query in mysql

SELECT * FROM `table_name`;
SELECT `col1`,`col2` FROM `table_name`;
SELECT `col1 as name`,`col2 as email` FROM `table_name`;
SELECT * FROM `table_name` WHERE id = '1';

Example 3: mysql use if on select

IF(expression ,expr_true, expr_false);

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Sql Example

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