SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList (children 1)
      Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier information_schema.tables
   Function and (children 1)
    ExpressionList (children 2)
     Function like (children 1)
      ExpressionList (children 2)
       Identifier table_name
       Literal \'tab_with_primary_key_index%\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table_schema
       Function currentDatabase (children 1)
        ExpressionList
