CREATE TABLE test.check_query_comment_column ( first_column UInt8 DEFAULT 1 COMMENT \'first comment\',  fourth_column UInt8 COMMENT \'fourth comment\',  fifth_column UInt8,  second_column UInt8 MATERIALIZED first_column COMMENT \'second comment\',  third_column UInt8 ALIAS second_column COMMENT \'third comment\') ENGINE = TinyLog
┌─table──────────────────────┬─name──────────┬─comment────────┐
│ check_query_comment_column │ first_column  │ first comment  │
│ check_query_comment_column │ fourth_column │ fourth comment │
│ check_query_comment_column │ fifth_column  │                │
│ check_query_comment_column │ second_column │ second comment │
│ check_query_comment_column │ third_column  │ third comment  │
└────────────────────────────┴───────────────┴────────────────┘
CREATE TABLE test.check_query_comment_column ( first_column UInt8 DEFAULT 1 COMMENT \'another first column\',  fourth_column UInt8 COMMENT \'another fourth column\',  fifth_column UInt8 COMMENT \'another fifth column\',  second_column UInt8 MATERIALIZED first_column COMMENT \'another second column\',  third_column UInt8 ALIAS second_column COMMENT \'another third column\') ENGINE = TinyLog
┌─table──────────────────────┬─name──────────┬─comment───────────────┐
│ check_query_comment_column │ first_column  │ another first column  │
│ check_query_comment_column │ fourth_column │ another fourth column │
│ check_query_comment_column │ fifth_column  │ another fifth column  │
│ check_query_comment_column │ second_column │ another second column │
│ check_query_comment_column │ third_column  │ another third column  │
└────────────────────────────┴───────────────┴───────────────────────┘
CREATE TABLE test.check_query_comment_column ( first_column Date COMMENT \'first comment\',  second_column UInt8 COMMENT \'second comment\',  third_column UInt8 COMMENT \'third comment\') ENGINE = MergeTree(first_column, (second_column, second_column), 8192)
┌─table──────────────────────┬─name──────────┬─comment────────┐
│ check_query_comment_column │ first_column  │ first comment  │
│ check_query_comment_column │ second_column │ second comment │
│ check_query_comment_column │ third_column  │ third comment  │
└────────────────────────────┴───────────────┴────────────────┘
CREATE TABLE test.check_query_comment_column ( first_column Date COMMENT \'another first comment\',  second_column UInt8 COMMENT \'another second comment\',  third_column UInt8 COMMENT \'another third comment\') ENGINE = MergeTree(first_column, (second_column, second_column), 8192)
┌─table──────────────────────┬─name──────────┬─comment────────────────┐
│ check_query_comment_column │ first_column  │ another first comment  │
│ check_query_comment_column │ second_column │ another second comment │
│ check_query_comment_column │ third_column  │ another third comment  │
└────────────────────────────┴───────────────┴────────────────────────┘