Explain EXPLAIN SYNTAX (children 2)
 Set
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 1)
     Function count (children 1)
      ExpressionList
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier tab
    Function and (children 1)
     ExpressionList (children 2)
      Function like (children 1)
       ExpressionList (children 2)
        Identifier col_string
        Literal \'app%\'
      Function like (children 1)
       ExpressionList (children 2)
        Identifier col_fixedstring
        Literal \'fruit%\'
