CreateQuery tab (children 3) Identifier tab Columns definition (children 2) ExpressionList (children 1) ColumnDeclaration str (children 1) DataType String ExpressionList (children 1) Index (children 2) Identifier str Function text (children 1) ExpressionList (children 1) Identifier tokenizer Storage definition (children 2) Function MergeTree Function tuple (children 1) ExpressionList