DROP TABLE IF EXISTS columns_transformers; CREATE TABLE columns_transformers (i Int64, j Int16, k Int64) Engine=TinyLog; INSERT INTO columns_transformers VALUES (100, 10, 324), (120, 8, 23); SELECT * APPLY(sum) from columns_transformers; SELECT columns_transformers.* APPLY(avg) from columns_transformers; SELECT a.* APPLY(toDate) APPLY(any) from columns_transformers a; SELECT COLUMNS('[jk]') APPLY(toString) APPLY(length) from columns_transformers; SELECT * EXCEPT(i) APPLY(sum) from columns_transformers; SELECT columns_transformers.* EXCEPT(j) APPLY(avg) from columns_transformers; -- EXCEPT after APPLY will not match anything SELECT a.* APPLY(toDate) EXCEPT(i, j) APPLY(any) from columns_transformers a; SELECT * REPLACE(i + 1 AS i) APPLY(sum) from columns_transformers; SELECT columns_transformers.* REPLACE(j + 2 AS j, i + 1 AS i) APPLY(avg) from columns_transformers; SELECT columns_transformers.* REPLACE(j + 1 AS j, j + 2 AS j) APPLY(avg) from columns_transformers; -- { serverError 43 } -- REPLACE after APPLY will not match anything SELECT a.* APPLY(toDate) REPLACE(i + 1 AS i) APPLY(any) from columns_transformers a; EXPLAIN SYNTAX SELECT * APPLY(sum) from columns_transformers; EXPLAIN SYNTAX SELECT columns_transformers.* APPLY(avg) from columns_transformers; EXPLAIN SYNTAX SELECT a.* APPLY(toDate) APPLY(any) from columns_transformers a; EXPLAIN SYNTAX SELECT COLUMNS('[jk]') APPLY(toString) APPLY(length) from columns_transformers; EXPLAIN SYNTAX SELECT * EXCEPT(i) APPLY(sum) from columns_transformers; EXPLAIN SYNTAX SELECT columns_transformers.* EXCEPT(j) APPLY(avg) from columns_transformers; EXPLAIN SYNTAX SELECT a.* APPLY(toDate) EXCEPT(i, j) APPLY(any) from columns_transformers a; EXPLAIN SYNTAX SELECT * REPLACE(i + 1 AS i) APPLY(sum) from columns_transformers; EXPLAIN SYNTAX SELECT columns_transformers.* REPLACE(j + 2 AS j, i + 1 AS i) APPLY(avg) from columns_transformers; EXPLAIN SYNTAX SELECT a.* APPLY(toDate) REPLACE(i + 1 AS i) APPLY(any) from columns_transformers a; -- Multiple REPLACE in a row EXPLAIN SYNTAX SELECT * REPLACE(i + 1 AS i) REPLACE(i + 1 AS i) from columns_transformers; -- Explicit column list SELECT COLUMNS(i, j, k) APPLY(sum) from columns_transformers; EXPLAIN SYNTAX SELECT COLUMNS(i, j, k) APPLY(sum) from columns_transformers; DROP TABLE columns_transformers;