CreateQuery test_insert_t3 (children 3) Identifier test_insert_t3 Columns definition (children 1) ExpressionList (children 4) ColumnDeclaration dt (children 1) DataType Date ColumnDeclaration uid (children 1) DataType String ColumnDeclaration name (children 1) DataType String ColumnDeclaration city (children 1) DataType String Storage definition (children 4) Function MergeTree Function toYYYYMMDD (children 1) ExpressionList (children 1) Identifier dt Identifier name Set