Mysql Where Different. Select select list from table name where search condition. So here mysql looks outside the subquery and finds tablename1 in the outer query.
Inside a table a column often contains many duplicate values. So here mysql looks outside the subquery and finds tablename1 in the outer query. And sometimes you only want to list the different distinct values.
So here mysql looks outside the subquery and finds tablename1 in the outer query.
Thus like joins a subquery is used to combine table data from different tables into a single result set. Sql home sql intro sql syntax sql select sql select distinct sql where sql and or not sql order by sql insert into sql null values sql update sql delete sql select top sql min and max sql count avg sum sql like sql wildcards sql in sql between sql aliases sql joins sql inner join sql left join sql right join sql full join sql self join sql. And sometimes you only want to list the different distinct values. Where in returns values that matches values in a list or subquery.
