SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Function countSubstringsCaseInsensitiveUTF8 (children 1) ExpressionList (children 2) Literal \'ЯbЯЯ\' Function concat (children 1) ExpressionList (children 2) Function substringUTF8 (children 1) ExpressionList (children 2) Function char (children 1) ExpressionList (children 1) Identifier number Literal UInt64_2 Literal \'я\' TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) Function numbers (children 1) ExpressionList (children 1) Literal UInt64_100 Function equals (children 1) ExpressionList (children 2) Identifier number Literal UInt64_65