Trying to return strings starting with 'dbo.'

  • Hi all,

    As the title implies I want the characters to the right of "dbo.", which - you guessed it - are tablenames, but of course I need to experiment with the length as some will be 5 characters long, others 50.

    Of course I had

    Select Tablename

    From ListOfTables

    Where Tablename like'%dbo.%'

    But this doesn't come close.

    TIA

  • You are matching things that might be

    - dbo.mytable

    - etl.dbo.table

    I'd use

    select TableName
    from ListofTables
    where Left(TableName, 4) = 'dbo.'

    Repro:

    WITH ListofTables (TableName)
    AS ( SELECT s.name + '.' + o.name AS TableName
    FROM
    sys.objects o
    INNER JOIN sys.schemas AS s
    ON o.schema_id = s.schema_id
    WHERE type = 'U')
    SELECT TableName FROM ListofTables WHERE LEFT(TableName, 4) = 'dbo.';

     

  • If you just want table names that start with 'dbo.', then you can do this:

    SELECT STUFF(Tablename, 1, 4, '') AS Tablename
    FROM dbo.ListOfTables
    WHERE Tablename LIKE 'dbo.%' /*allows an index seek on Tablename, if available*/

    Are there multiple tables names in one row?  Is that why you included a '%' in the front of the string?

    SQL DBA,SQL Server MVP(07, 08, 09) "Money can't buy you happiness." Maybe so, but it can make your unhappiness a LOT more comfortable!

  • Neither set of code is coming up with a meaningful result set, not sure where the disconnect here is, but I'll try again:

    If a row contains:

    koagvakjnonsenseajg4648.dbo.RandomTableForSSChahfhaijfhfhf5664646

    I want to return the dbo. string PLUS any x characters to the right of said string, so I need to be able to specify the number of characters after dbo. that are returned.  In the above case the 'RandomTableForSSC' tablename has 17 characters, I'd start with 17 and try some larger numbers, I don't mind as the data doesn't have to be cleansed.

    • This reply was modified 2 years, 8 months ago by  JaybeeSQL.
  • declare @t table (tablename varchar(100))

    insert into @t values
    ('dbo.mytable'),
    ('etl.dbo.table'),
    ('koagvakjnonsenseajg4648.dbo.RandomTableForSSChahfhaijfhfhf5664646'),
    ('nonsensetable')

    select tablename,
    Substring(tablename, charIndex('dbo.',tablename), len(tablename))
    from @t
    where charIndex('dbo.',tablename) > 0

    For better, quicker answers, click on the following...
    http://www.sqlservercentral.com/articles/Best+Practices/61537/

    For better answers on performance questions, click on the following...
    http://www.sqlservercentral.com/articles/SQLServerCentral/66909/

  •  

    SELECT SUBSTRING(TableName, CHARINDEX('dbo.', TableName), 8000) AS TableName

    FROM dbo.whatever

    WHERE TableName LIKE '%dbo.%'

    SQL DBA,SQL Server MVP(07, 08, 09) "Money can't buy you happiness." Maybe so, but it can make your unhappiness a LOT more comfortable!

  • I marked Mike's as the script that satisfied my requirement but to be fair Scott's came closest - I can't however changed the marked answer.

    Thank you gentlemen 🙂

     

  • JaybeeSQL wrote:

    Neither set of code is coming up with a meaningful result set, not sure where the disconnect here is, but I'll try again:

    If a row contains: koagvakjnonsenseajg4648.dbo.RandomTableForSSChahfhaijfhfhf5664646

    I want to return the dbo. string PLUS any x characters to the right of said string, so I need to be able to specify the number of characters after dbo. that are returned.  In the above case the 'RandomTableForSSC' tablename has 17 characters, I'd start with 17 and try some larger numbers, I don't mind as the data doesn't have to be cleansed.

    Does the table name exist in a database anywhere that's accessible??

    --Jeff Moden


    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.
    "Change is inevitable... change for the better is not".

    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)
    Intro to Tally Tables and Functions

Viewing 8 posts - 1 through 7 (of 7 total)

You must be logged in to reply to this topic. Login to reply