CreateQuery t3 (children 3) Identifier t3 Columns definition (children 1) ExpressionList (children 1) ColumnDeclaration a (children 1) DataType UInt32 Storage definition (children 4) Function MergeTree Function modulo (children 1) ExpressionList (children 2) Identifier a Literal UInt64_16 Function tuple (children 1) ExpressionList Set