SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 4) ExpressionList (children 1) Asterisk TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier tab Function like (children 1) ExpressionList (children 2) Identifier s Literal \'%house你好%\' ExpressionList (children 1) OrderByElement (children 1) Identifier k