Select
select( [ string $arg1, string $arg2, ...] )
The select() method allows you to determine which columns are retrieved in your query. If no columns are placed in the select statement, the method will default to select *, selecting all columns from the table(s) queried.
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DB::MySQL()->table('myTable')->select(); // select * |
You can enter the columns as either a single argument, or in multiple arguments:
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DB::MySQL()->table('myTable')->select('column1, column2, column3'); // is the same as
DB::MySQL()->table('myTable')->select('column1', 'column2', 'column3'); |
To select columns from specific tables, simply prepend “tableName.” to the column unless the database syntax requires otherwise. For example:
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// As a single argument:
DB::MySQL()->table('myTable') ->join('myOtherTable', 'myMatchColumn') ->select('myTable.column1, myOtherTable.column2'); // Or using separate arguments:
DB::MySQL()->table('myTable') ->join('myOtherTable', 'myMatchColumn') ->select('myTable.column1', 'myOtherTable.column2'); |
To assign aliases to your columns, simply add the appropriate database syntax immediately after the column, such as:
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// Single Argument:
DB::MySQL()->table('myTable')->select('column1 as item1, column2, column3'); // Multiple Arguments:
DB::MySQL()->table('myTable')->select('column1 as item1', 'column2', 'column3'); |