How to search value from SQL data base using %

Question

1.00/5 (2 votes)

See more:

like i need data from pname which is hassan but i want to write hasan or hsssan or any word start with h in textbox2 code must chack first spell of textbox2 and find the related values.

and want to show them in datagridview

i tried the above code but it search the value start from textbox2 value

like if i want hassan then i need to enter h.
but i want to write the wrong spell but the first spell must be correct.

What I have tried:

SqlDataAdapter sqlDa = new SqlDataAdapter("SELECT * FROM stock  WHERE pname LIKE @pname", con);
              sqlDa.SelectCommand.Parameters.AddWithValue("@pname", textBox2.Text + "%");

Posted 22-Oct-19 6:50am

Member 14603071

Updated 22-Oct-19 8:03am

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

RickZeeland · Answer 1 · 2019-10-22T07:02:00

Solution 1

See the answers here: Question: How to use a parameter in a SQL "like" statement? · Issue #332 · tediousjs/node-mssql · GitHub[^]

Posted 22-Oct-19 7:02am

RickZeeland

Richard Deeming · Answer 2 · 2019-10-22T08:03:00

There isn't a magic option to find the "correct" spelling of the user's search term. And even if there was, there's no guarantee that the data in the database would be spelled "correctly" anyway.

The closest you can get is to calculate the difference between the soundex[^] codes for the database value and the search term. SQL Server has a built-in function to do that, which returns a value from 0 to 4, where 0 means not at all similar, and 4 means virtually identical.

C#

SqlDataAdapter sqlDa = new SqlDataAdapter("SELECT * FROM stock  WHERE DIFFERENCE(pname, @pname) > 1", con);
sqlDa.SelectCommand.Parameters.AddWithValue("@pname", textBox2.Text);

DIFFERENCE (Transact-SQL) - SQL Server | Microsoft Docs[^]

NB: Soundex is specifically based on English pronunciation. Depending on your users, your results may vary.

There are other methods for comparing similar-sounding strings, but none that are built in to SQL Server. For example, PostgreSQL offers:
PostgreSQL: Documentation: 9.1: fuzzystrmatch[^]