Question

Just fishing for ideas-

I have a SQL statement that I need to parse in C#. It is formatted basically as follows –

    WITH TableX as (

    -- something else could be here..
    select field1, field2, .. fieldX
    from mytable
    -- something else could be here..

    )

    -- something else could be here..
    select /*THESE FIELDS ARE BEING REPLACED*/ TableX.field1, TableX.field2, .. TableX.fieldX
    from TableX
    -- something else could be here.. ie, more joins, selecting from subqueries. Basically another select could exist here.

Any ideas on how to replace “TableX.field1, TableX.field2, .. TableX.fieldX” with another group of field guaranteed to be in the result set?

Answer 1

you could use a complete sql parser to build a parse tree, then replace the items selectively from there.

non-trivial task.