Question

I have a sql string as follows:

select a, b, c from test where a = s and b = 3

Using C# 2.0 specifically, how can I get:

a = s, b = 3

But in the form of a collection, so one member is “a = s”, the other is “b = 3”?

Thanks
P.S. Table names have been changed but the point remains

EDIT: I have just realised I could get a substring from where onwards and then split it where there are commas and an and. Is there a better way?

Answer 1

Are you asking how to take part of the sql query string, splitting it and storing it in a collection?

Use the built-in string functions or built a regular expression to extract them. A naive approach would be to split the sql string after ‘where’ and then again at each comma.

Dim sqlQuery As String = "select a, b, c from test where a = s, b = 3"
Dim lastPArt() As String = sqlQuery.Split(New String() {"where"}, StringSplitOptions.RemoveEmptyEntries)(1).Split(","c)

This only handles splitting the where conditions that are seperated by a comma. If more conditions such as “And” or “Or” should be supported then add them to the array of the second split call:

.Split(New String(){",", "or", "and"}, StringSplitOptions.RemoveEmptryEntries)

What is the purpose of isolating each of these conditions?