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String Manipulation

  • April 14, 2011 at 12:35 pm

    #238602

    Hello Everyone

    I am working on a little SQL code, that I am stuck on one part. I think that I have done some code similar in the past, but I cannot remember how to write this.

    I have this string:

    TransactionLogBackupTest_TransLog_201104051400.TRN

    I would like to keep all characters left of the first underscore. So that the result will be

    TransactionLogBackupTest

    I have some code that is close, but I am missing something

    Thank You in advance

    Andrew SQLDBA

  • April 14, 2011 at 12:37 pm

    #1311798

    LEFT(your_column,CHARINDEX('_',your_column+'_')-1)

    MM


    select geometry::STGeomFromWKB(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  • April 14, 2011 at 12:41 pm

    #1311800

    Works perfectly.

    I was missing the -1

    Thanks

    Andrew SQLDBA

  • April 14, 2011 at 3:23 pm

    #1311886

    select left('TransactionLogBackupTest_TransLog_201104051400.TRN',(cast(charindex('_','TransactionLogBackupTest_TransLog_201104051400.TRN') AS INT) -1))

    use "CAST AS INT" also before charindex. Sometime if the string return VARCHAR or anyother datatype than INT, than your query will fail.

    -MJ
    Please do not print mails and docx unless it is absolutely necessary. Spread environmental awareness.

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