18 lines
704 B
Org Mode
Executable File
18 lines
704 B
Org Mode
Executable File
:PROPERTIES:
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:ID: de3bef27-81c9-49d1-85bb-edceb9a80e65
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:END:
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#+title: SQL Joins
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#+filetags: :sql:joins:database:
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* The SQL JOIN Clause
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The JOIN clause is used to combine rows from two or more tables, based on a related column between them.
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Here are the different types of JOINs in SQL:
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**(INNER) JOIN**: Returns only rows that have matching values in both tables
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**LEFT (OUTER) JOIN**: Returns all rows from the left table, and only the matched rows from the right table
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**RIGHT (OUTER) JOIN**: Returns all rows from the right table, and only the matched rows from the left table
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**FULL (OUTER) JOIN**: Returns all rows when there is a match in either the left or right table
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