Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
SQL Insert fields with a ' in them
Message
From
03/06/2015 11:24:15
Mike Yearwood
Toronto, Ontario, Canada
 
 
To
02/06/2015 10:27:45
Lutz Scheffler
Lutz Scheffler Software Ingenieurbüro
Dresden, Germany
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows Server 2012
Network:
Windows 2008 Server
Database:
MS SQL Server
Application:
Desktop
Miscellaneous
Thread ID:
01620334
Message ID:
01620574
Views:
112
>>Hi Mark
>>
>>*This is not needed. mproperty01 = ALLTRIM(STRTRAN(NTR_desc,"'",""))
>>mproperty01 = ntr_desc
>>lcInsert = "insert into nominaltransaction(nominalbatchnum) values ( ?m.mProperty01 )"
>>
>>Anything where you concatenate the data into the sql command is called SQL INJECTION. That practice leaves you open to SQL Injection Attacks. Besides, doing what I show above means you need not do any strtrans to sanitize the input.
>
>If you concenate a SQL string you just construct a string.
>SQL injection is when you manipulate a part of the string (in this: a parameter) so that it will run extra commands. You inject a command via abused parameter
>
>But in general you are right, it's better to do it your way.

This may be simply a matter of semantics, but if you're using parameters, it cannot be abused. In my interpretation, the programmer is injecting a value into a string during concatenation. It is this injection that is abused during a sql injection attack. :)
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform