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POHow to recognize & escape apostrophe in sql search
 

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  1. POHow to recognize & escape apostrophe in sql search
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    <p>I have sql query in my C# program to search or filter some records. When I pass a string value with apostrope, it throws some incorrect key word error in my C# program.</p> <p><strong>My sample Input</strong></p> <pre><code>String Val= Tests of the 'convergence hypothesis' : a critical note / Daniel Cohen. </code></pre> <p><strong>My Query</strong></p> <pre><code>string MySqlQry="SELECT bc.BibId, stuff( (SELECT ' ' + bsc.NormValue + '' FROM BibContents bsc WHERE bsc.bibid = bc.bibid AND bsc.tagno = '245' ORDER BY bsc.Sfld FOR xml path(''), root('MyString'), TYPE).value('/MyString[1]','varchar(max)') , 1, 1, '') AS Title, stuff( (SELECT ' ' + bsc.NormValue + '' FROM BibContents bsc WHERE bsc.bibid = bc.bibid AND bsc.tagno = '020' ORDER BY bsc.Sfld FOR xml path(''), root('MyString'), TYPE).value('/MyString[1]','varchar(max)') , 1, 1, '') AS ISBN, stuff( (SELECT ' ' + bsc.NormValue + '' FROM BibContents bsc WHERE bsc.bibid = bc.bibid AND bsc.tagno = '250' ORDER BY bsc.Sfld FOR xml path(''), root('MyString'), TYPE).value('/MyString[1]','varchar(max)') , 1, 1, '') AS Edition, stuff( (SELECT ' ' + bsc.NormValue + '' FROM BibContents bsc WHERE bsc.bibid = bc.bibid AND bsc.tagno = '260' ORDER BY bsc.Sfld FOR xml path(''), root('MyString'), TYPE).value('/MyString[1]','varchar(max)') , 1, 1, '') AS Publisher, (SELECT top(1) Value FROM BibContents WHERE TagNo='100' AND Sfld='a' AND BibId=bc.BibId) AS Author FROM BibContents bc WHERE (bc.NormValue LIKE '" + Val + "%' OR bc.NormValue LIKE '% " + Val + "%') AND bc.TagNo='245'"; model = db.ExecuteStoreQuery&lt;PoDetails&gt;(MySqlQry).ToList(); </code></pre> <p>Any help in providing the solution is appreciated. </p>
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    1. USDonMax
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    1. COThe best solution is to use `SqlParameter` and prevent sql injection.
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    2. COhttp://stackoverflow.com/questions/8148815/c-sharp-sqlparameters-short-hand
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