SQL style JOIN on JSON data

Question

Is there any way efficiently to join JSON data? Suppose we have two JSON datasets:

{\"COLORS\":[[1,red],[2,yellow],[3,orange]]}

{\"FRUITS\":[[1,apple],[2,ba         


        

Answer 1

Alasql JavaScript SQL library does exactly what you need in one line:

You can play with this example in jsFiddle.

This is a SQL expression, where:

• SELECT - select operator
• MATRIX - modifier, whci converts resultset from array of objects to array of arrays
• COLORS.[0] - first column of COLORS array, etc.
• FRUITS.1 AS 2 - the second column of array FRUITS will be stored as third column in resulting recordset
• FROM ? AS COLORS - data array from parameters named COLORS in SQL statement
• JOIN ? ON ... - join
• [data.COLORS, data.FRUITS] - parameters with data arrays