CreateQuery replacing_table (children 3) Identifier replacing_table Columns definition (children 1) ExpressionList (children 3) ColumnDeclaration a (children 1) DataType UInt32 ColumnDeclaration b (children 1) DataType UInt32 ColumnDeclaration c (children 1) DataType UInt32 Storage definition (children 3) Function ReplacingMergeTree Identifier a Set