CreateQuery codecs10 (children 3) Identifier codecs10 Columns definition (children 1) ExpressionList (children 1) ColumnDeclaration a (children 2) DataType FixedString (children 1) ExpressionList (children 1) Literal UInt64_2 Function CODEC (children 1) ExpressionList (children 1) Function Gorilla Storage definition (children 2) Function MergeTree Function tuple (children 1) ExpressionList