DROP TABLE IF EXISTS X; DROP TABLE IF EXISTS Y; CREATE TABLE X (id Int) ENGINE=Memory; CREATE TABLE Y (id Int) ENGINE=Memory; -- Type mismatch of columns to JOIN by: plus(id, 1) Int64 at left, Y.id Int32 at right. SELECT Y.id - 1 FROM X RIGHT JOIN Y ON (X.id + 1) = Y.id SETTINGS join_use_nulls=1; -- { serverError 53 } SELECT Y.id - 1 FROM X RIGHT JOIN Y ON (X.id + 1) = toInt64(Y.id) SETTINGS join_use_nulls=1; -- Logical error: 'Arguments of 'plus' have incorrect data types: '2' of type 'UInt8', '1' of type 'UInt8''. -- Because 1 became toNullable(1), i.e.: -- 2 UInt8 Const(size = 1, UInt8(size = 1)) -- 1 UInt8 Const(size = 1, Nullable(size = 1, UInt8(size = 1), UInt8(size = 1))) SELECT 2+1 FROM system.one X RIGHT JOIN system.one Y ON X.dummy+1 = Y.dummy SETTINGS join_use_nulls = 1; -- { serverError 53 } SELECT 2+1 FROM system.one X RIGHT JOIN system.one Y ON X.dummy+1 = toUInt16(Y.dummy) SETTINGS join_use_nulls = 1; SELECT X.dummy+1 FROM system.one X RIGHT JOIN system.one Y ON X.dummy = Y.dummy SETTINGS join_use_nulls = 1; SELECT Y.dummy+1 FROM system.one X RIGHT JOIN system.one Y ON X.dummy = Y.dummy SETTINGS join_use_nulls = 1; DROP TABLE X; DROP TABLE Y;