John Davidson

php - how to get 2 different results from the same column using MySQL Query

0 comments
Message:


I want to get 2 results at the same time, from a single column.


For example:


    $MySQLQuery = $wpdb->get_results("
SELECT meta_value FROM wp_postmeta
WHERE
meta_key='client_name' AND meta_value = 'Jhon' AND
meta_key='order_completed' AND meta_value = 'yes'

");

Edit:
i want to get 2 distinct results from the same column.


The Columns are called "meta_key" and "meta_value"


In the column "meta_key" I want to get the 2 results:


client_name
order_completed

In column "meta_value", it is the result of columns "meta_key"


john
yes


My Answer:
>get_results("SELECT column_name FROM table_name WHERE condition");

This query will return all the values from the "column_name" column that meet the specified condition. If you want to get two different results from the same column, you can modify the query to include multiple conditions or use the UNION operator to combine the results of two separate queries.

For example, if you want to get the values from the "column_name" column where the value is either "value1" or "value2", you can use the following query:


$MySQLQuery = $wpdb->get_results("SELECT column_name FROM table_name WHERE column_name = 'value1' OR column_name = 'value2'");


Alternatively, you can use the UNION operator to combine the results of two separate queries:


$MySQLQuery = $wpdb->get_results("SELECT column_name FROM table_name WHERE column_name = 'value1'
UNION
SELECT column_name FROM table_name WHERE column_name = 'value2'");


This will return the values from the "column_name" column where the value is either "value1" or "value2" in two separate result sets.

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