Modifiers

Return Value Modifiers

Return Value Modifiers use for modification of alasql() function output from array of objects to anothe JavaScript data structure, like array of arrays.

SELECT By default

Returns array of objects:

    alasql('SELECT * FROM one');
    => [{a:1,b:10},{a:2,b:20}]

SELECT VALUE

Returns first value of first row:

    // Return number of all lines in README.md
    alasql('SELECT VALUE COUNT(*) FROM TXT(‘README.md’)');
    => 745

SELECT COLUMN

Returns first column from all rows:

    alasql('SELECT COLUMN a FROM ?',[data]);
    => [1,2]

SELECT ROW

Returns values of all columns of first row:

    alasql('SELECT ROW a FROM ?',[data]);
    [1,10]

SELECT MATRIX

Returns array of arrays:

    alasql('SELECT MATRIX * FROM ?',[data]);
    => [[1,10],[2,20]]

SELECT INDEX

Create object by key, value

    alasql('SELECT INDEX a,b FROM ?', [[{a:1,b:10},{a:2,b:20}]])
    => {1:{b:10}, 2:{b:20}}