Joins
There are four join functions: join, innerjoin, leftjoin, and rightjoin.
join( string $table_name, string $table_short_name, string $on, [string $type = 'inner'] )
You can create a join by using a shared column or by using the equals (“=”) syntax as shown below:
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// Join on Shared Column
DB::MySQL()->table('myTable', 'short')->select() ->join('myOtherTable', 'short2', 'sharedColumn'); // Join using Equals Syntax
DB::MySQL()->table('myTable', 'short')->select() ->join('myOtherTable', 'short2', 'short1.column = short2.column'); |
You can also determine the type of join within the join() method by declaring it’s type as a fourth argument (inner, left, right). However, for convenience, you are also able to use the following methods below.
innerjoin( string $table_name, string $table_short_name, string $on)
leftjoin( string $table_name, string $table_short_name, string $on)
rightjoin( string $table_name, string $table_short_name, string $on)
Join using a shared column:
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DB::MySQL()->table('myTable', 'short')->select() ->innerjoin('myOtherTable', 'short2', 'sharedColumn'); DB::MySQL()->table('myTable', 'short')->select() ->leftjoin('myOtherTable', 'short2', 'sharedColumn'); DB::MySQL()->table('myTable', 'short')->select() ->rightjoin('myOtherTable', 'short2', 'sharedColumn'); |
Or Join using Equals Syntax:
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DB::MySQL()->table('myTable', 'short')->select() ->innerjoin('myOtherTable', 'short2', 'short1.column = short2.column'); DB::MySQL()->table('myTable', 'short')->select() ->leftjoin('myOtherTable', 'short2', 'short1.column = short2.column'); DB::MySQL()->table('myTable', 'short')->select() ->rightjoin('myOtherTable', 'short2', 'short1.column = short2.column'); |
Note: you may also the table short name in the select(), where(), orderBy(), and groupBy() methods.