How can I insert a special character in sql server

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ASP.NET

How we can enter the special character like , "" % ? etc in sql server table using asp.net with C#?
Please Help me

Posted 15-Feb-11 2:18am

joti parkash

Updated 15-Feb-11 2:32am

LittleYellowBird

v4

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3 solutions

Solution 2

This [^]might help you.

Posted 15-Feb-11 2:25am

Abhinav S

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OriginalGriff · Accepted Answer · 2011-02-15T02:24:00

Solution 1

Use parametrized queries:

C#

using (SqlCommand com = new SqlCommand("INSERT INTO MyTable (message) " +
                                       "VALUES (@M)", con))
    {
    com.Parameters.AddWithValue("@M", @"""%$#@?,.;");
    com.ExecuteNonQuery();
    }

Posted 15-Feb-11 2:24am

OriginalGriff

#realJSOP · Accepted Answer · 2011-02-15T02:30:00

I found this WITH GOOGLE ( search phrase was "t-sql storing special characters"):

To escape special characters in a LIKE expression you prefix them with an escape character. You get to choose which escape char to use with the ESCAPE keyword. (MSDN Ref)

For example this escapes the % symbol, using \ as the escape char:

SQL

select * from table where myfield like '%15\% off%' ESCAPE '\'

If you don't know what characters will be in your string, and you don't want to treat them as wildcards, you can prefix all wildcard characters with an escape char, eg:

SQL

set @myString = replace(
                replace(
                replace(
                replace(@myString,'\','\\'),
                        '%','\%'),
                        '_','\_'),
                        '[','\[')

(Note that you have to escape your escape char too). Then you can use something like this:

SQL

select * from table where myfield like '%' + @myString + '%' ESCAPE '\'

Also remember to allocate more space for your @myString variable as it will become longer with the string replacement.