Computer Science - Class 12
Chapter 9 - Structured Query Language

Define Equi join.



Equi Join is a simple SQL join which uses the equal sign as the comparison operator.

It combines tables by matching values in specified columns.


SELECT column_list

FROM table1, table2....

WHERE table1.column_name = table2.column_name


SELECT column_list

FROM table1  

JOIN table2

[ON ( join_condition ) ]



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Additional points:

  • The column names of columns specified for joining need not be the same.
  • The resultant table will contain repeated columns.
  • Equi Join can be performed on more than 2 tables.

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