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Replacing symbols in SQLQuery

Replacing symbols in SQLQuery

Replacing symbols in SQLQuery


If a string that is going from a text area in a database contains ' the SQLquery is interrupted.
To avoid this I have to replace this ' with another symbol that does not affect the SQLquery.
How do I accomplish this?


RE: Replacing symbols in SQLQuery

Substitute each ' with ''.  I know this works for Oracle.

so "it's 'time'"  becomes "it''s ''time''"

RE: Replacing symbols in SQLQuery

I could do that... but I want it to do it automatically so my users don't have to think about it.

RE: Replacing symbols in SQLQuery

Then change the code that handles the DML to replace each ' with ''.  Its hard to give more details without knowing your specific implementation.  But say for example you're using PHP


$query = str_replace("'","''",$input);

RE: Replacing symbols in SQLQuery

I'm not familiar with ASP.  But the concept is the same.  Take the inputs, replace every ' with '', then perform the sql.

RE: Replacing symbols in SQLQuery

Somewhere in save_user.asp, you must be building a SQL query that you pass to Access, right?

In asp, you would use the replace function in a similar way that jaxtell shows.  The syntax is slightly different in ASP, but the concept is the same.


SQL = Replace(SQL, "'", "'")

Better yet... Learn how to use a command object with parameters.  

If you think it's not important to do this, I encourage you to read up on SQL Injection.


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