SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Asterisk TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) Function s3Cluster (children 1) ExpressionList (children 8) Literal \'test_cluster_two_shards_localhost\' Literal \'http://localhost:11111/test/{a,b,c}.tsv\' Literal \'test\' Literal \'testtest\' Literal \'\' Literal \'TSV\' Literal \'c1 UInt64, c2 UInt64, c3 UInt64\' Literal \'auto\' ExpressionList (children 3) OrderByElement (children 1) Identifier c1 OrderByElement (children 1) Identifier c2 OrderByElement (children 1) Identifier c3