CreateQuery recompression_table (children 3) Identifier recompression_table Columns definition (children 1) ExpressionList (children 3) ColumnDeclaration dt (children 1) DataType DateTime ColumnDeclaration key (children 1) DataType UInt64 ColumnDeclaration value (children 1) DataType String Storage definition (children 5) Function MergeTree (children 1) ExpressionList Identifier key Function tuple (children 1) ExpressionList ExpressionList (children 2) TTLElement (children 1) Function plus (children 1) ExpressionList (children 2) Identifier dt Function toIntervalMonth (children 1) ExpressionList (children 1) Literal UInt64_1 TTLElement (children 1) Function plus (children 1) ExpressionList (children 2) Identifier dt Function toIntervalYear (children 1) ExpressionList (children 1) Literal UInt64_1 Set