SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function trimLeft (children 1)
     ExpressionList (children 1)
      Identifier explain
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN\'
               Literal \'indexes = 1\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 6)
                   ExpressionList (children 1)
                    Identifier id
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier tab
                   Function lessOrEquals (children 1)
                    ExpressionList (children 2)
                     Identifier attr1
                     Literal UInt64_105
                   ExpressionList (children 1)
                    OrderByElement (children 1)
                     Function L2Distance (children 1)
                      ExpressionList (children 2)
                       Identifier vec
                       Literal Array_[Float64_1, Float64_1]
                   Literal UInt64_2
                   Set
   Function like (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%vector_similarity%\'
