SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 5)
    Literal \'Test 7: Different decimal scales\' (alias test_name)
    Function JSONExtract (alias scale_2) (children 1)
     ExpressionList (children 3)
      Literal \'{"dec": 123.456}\'
      Literal \'dec\'
      Literal \'Decimal(10,2)\'
    Function JSONExtract (alias scale_3) (children 1)
     ExpressionList (children 3)
      Literal \'{"dec": 123.456}\'
      Literal \'dec\'
      Literal \'Decimal(10,3)\'
    Function JSONExtract (alias scale_4) (children 1)
     ExpressionList (children 3)
      Literal \'{"dec": 123.456}\'
      Literal \'dec\'
      Literal \'Decimal(10,4)\'
    Function JSONExtract (alias scale_5) (children 1)
     ExpressionList (children 3)
      Literal \'{"dec": 123.456}\'
      Literal \'dec\'
      Literal \'Decimal(10,5)\'
