SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function trimLeft (children 1)
     ExpressionList (children 1)
      Identifier explain
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN\'
               Literal \'actions = 1\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 3)
                   ExpressionList (children 1)
                    Asterisk
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier test_improve_prewhere
                   Function and (children 1)
                    ExpressionList (children 4)
                     Function equals (children 1)
                      ExpressionList (children 2)
                       Identifier date
                       Literal \'2025-08-05\'
                     Function equals (children 1)
                      ExpressionList (children 2)
                       Function lower (children 1)
                        ExpressionList (children 1)
                         Identifier primary_key
                       Literal \'00\'
                     Function notEquals (children 1)
                      ExpressionList (children 2)
                       Identifier normal_column
                       Literal \'hello\'
                     Function less (children 1)
                      ExpressionList (children 2)
                       Identifier value
                       Literal UInt64_100
   Function ilike (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%Prewhere filter column%\'
