CreateQuery test_02245_2 (children 3) Identifier test_02245_2 Columns definition (children 1) ExpressionList (children 2) ColumnDeclaration a (children 1) DataType UInt64 ColumnDeclaration _path (children 1) DataType Int32 Storage definition (children 1) Function S3 (children 1) ExpressionList (children 3) Identifier s3_conn Function equals (children 1) ExpressionList (children 2) Identifier filename Literal \'test_02245_2\' Function equals (children 1) ExpressionList (children 2) Identifier format Identifier Parquet