<P> An SQL join clause combines columns from one or more tables in a relational database . It creates a set that can be saved as a table or used as it is . A JOIN is a means for combining columns from one ( self - join ) or more tables by using values common to each . ANSI - standard SQL specifies five types of JOIN : INNER , LEFT OUTER , RIGHT OUTER , FULL OUTER and CROSS . As a special case , a table ( base table , view , or joined table ) can JOIN to itself in a self - join . </P>
<P> An SQL join clause combines columns from one or more tables in a relational database . It creates a set that can be saved as a table or used as it is . A JOIN is a means for combining columns from one ( self - join ) or more tables by using values common to each . ANSI - standard SQL specifies five types of JOIN : INNER , LEFT OUTER , RIGHT OUTER , FULL OUTER and CROSS . As a special case , a table ( base table , view , or joined table ) can JOIN to itself in a self - join . </P>
what is the meaning of join in sql
what is the meaning of join in sql
a means for combining columns from one ( self - join ) or more tables by using values common to each . ANSI - standard SQL specifies five types of JOIN : INNER , LEFT OUTER , RIGHT OUTER , FULL OUTER and CROSS
a means for combining columns from one ( self - join ) or more tables by using values common to each . ANSI - standard SQL specifies five types of JOIN : INNER , LEFT OUTER , RIGHT OUTER , FULL OUTER and CROSS