CreateQuery t (children 3) Identifier t Columns definition (children 2) ExpressionList (children 2) ColumnDeclaration i (children 1) DataType int ColumnDeclaration j (children 1) DataType int ExpressionList (children 1) Projection (children 1) ProjectionSelectQuery (children 2) ExpressionList (children 1) Asterisk Identifier j Storage definition (children 3) Function MergeTree Identifier i Identifier i