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A really stupid problem with SQL

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  • J James T Johnson

    % is standard SQL, however Access (and thus DAO) uses *. I got bit by the opposite problem when I made the transition from DAO to ADO/SQL Server James Sonork: Hasaki "I left there in the morning with their God tucked underneath my arm their half-assed smiles and the book of rules. So I asked this God a question and by way of firm reply, He said - I'm not the kind you have to wind up on Sundays." "Wind Up" from Aqualung, Jethro Tull 1971

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    Dan Pomerchik
    wrote on last edited by
    #2

    Ahh thanks. And what about ADO ? Does it work with % or must use * too ?

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    • D Dan Pomerchik

      Well , I wrote a little app in VB that queries a table. I used DAO.I created a SQL generator that builds up a statement. But somehow only if I use * instead of % it works. For example , if i execute

      select * from Phonebook where Firstname like 'M*'

      I will get the appropriate records beginning with M. but if i write:

      select * from Phonebook where Firstname like 'M%'

      than all i get is an empty recordset! Why is that?! i remember that i used % before and it worked just fine. maybe someone knows what is the problem? thx!

      J Offline
      J Offline
      James T Johnson
      wrote on last edited by
      #3

      % is standard SQL, however Access (and thus DAO) uses *. I got bit by the opposite problem when I made the transition from DAO to ADO/SQL Server James Sonork: Hasaki "I left there in the morning with their God tucked underneath my arm their half-assed smiles and the book of rules. So I asked this God a question and by way of firm reply, He said - I'm not the kind you have to wind up on Sundays." "Wind Up" from Aqualung, Jethro Tull 1971

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      • D Dan Pomerchik

        Ahh thanks. And what about ADO ? Does it work with % or must use * too ?

        J Offline
        J Offline
        James T Johnson
        wrote on last edited by
        #4

        That I'm not sure about, I think it uses * for Access and % for others, but I'm not sure as I haven't done any ADO on Access. Oddly that was one combination I was able to avoid. James Sonork: Hasaki "I left there in the morning with their God tucked underneath my arm their half-assed smiles and the book of rules. So I asked this God a question and by way of firm reply, He said - I'm not the kind you have to wind up on Sundays." "Wind Up" from Aqualung, Jethro Tull 1971

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        • J James T Johnson

          That I'm not sure about, I think it uses * for Access and % for others, but I'm not sure as I haven't done any ADO on Access. Oddly that was one combination I was able to avoid. James Sonork: Hasaki "I left there in the morning with their God tucked underneath my arm their half-assed smiles and the book of rules. So I asked this God a question and by way of firm reply, He said - I'm not the kind you have to wind up on Sundays." "Wind Up" from Aqualung, Jethro Tull 1971

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          Mazdak
          wrote on last edited by
          #5

          James T. Johnson wrote: but I'm not sure as I haven't done any ADO on Access I used it.You have to use % .:) Mazy "The path you tread is narrow and the drop is shear and very high, The ravens all are watching from a vantage point near by, Apprehension creeping like a choo-train uo your spine, Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd

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          • D Dan Pomerchik

            Ahh thanks. And what about ADO ? Does it work with % or must use * too ?

            M Offline
            M Offline
            Mazdak
            wrote on last edited by
            #6

            Dan Pomerchik wrote: And what about ADO ? Does it work with % or must use * too ? In ADO You have to use % .:) Mazy "The path you tread is narrow and the drop is shear and very high, The ravens all are watching from a vantage point near by, Apprehension creeping like a choo-train uo your spine, Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd

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            • M Mazdak

              Dan Pomerchik wrote: And what about ADO ? Does it work with % or must use * too ? In ADO You have to use % .:) Mazy "The path you tread is narrow and the drop is shear and very high, The ravens all are watching from a vantage point near by, Apprehension creeping like a choo-train uo your spine, Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd

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              Dan Pomerchik
              wrote on last edited by
              #7

              Oh this is crap, every time you have to use a different character :omg: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? Anyway thanks guys, good to have some people who help :-)

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              • D Dan Pomerchik

                Oh this is crap, every time you have to use a different character :omg: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? Anyway thanks guys, good to have some people who help :-)

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                L Offline
                Lost User
                wrote on last edited by
                #8

                Dan Pomerchik wrote: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? How do you think they keep us on our feet? :)

                1 Reply Last reply
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                • D Dan Pomerchik

                  Oh this is crap, every time you have to use a different character :omg: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? Anyway thanks guys, good to have some people who help :-)

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                  Nick Parker
                  wrote on last edited by
                  #9

                  Dan Pomerchik wrote: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? How do you think they keep us on our feet? :) Don't you hate it when you forget to log on with the message boards? Nick Parker

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                  • D Dan Pomerchik

                    Oh this is crap, every time you have to use a different character :omg: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? Anyway thanks guys, good to have some people who help :-)

                    J Offline
                    J Offline
                    James T Johnson
                    wrote on last edited by
                    #10

                    There is a standard, %, I don't know if its in writing but everything I've seen except Access uses it :) Access (and DAO) is used on windows only, so it made sense to use * as the 'match anything wildcard' which is what windows uses. James Sonork: Hasaki "I left there in the morning with their God tucked underneath my arm their half-assed smiles and the book of rules. So I asked this God a question and by way of firm reply, He said - I'm not the kind you have to wind up on Sundays." "Wind Up" from Aqualung, Jethro Tull 1971

                    1 Reply Last reply
                    0
                    • D Dan Pomerchik

                      Well , I wrote a little app in VB that queries a table. I used DAO.I created a SQL generator that builds up a statement. But somehow only if I use * instead of % it works. For example , if i execute

                      select * from Phonebook where Firstname like 'M*'

                      I will get the appropriate records beginning with M. but if i write:

                      select * from Phonebook where Firstname like 'M%'

                      than all i get is an empty recordset! Why is that?! i remember that i used % before and it worked just fine. maybe someone knows what is the problem? thx!

                      C Offline
                      C Offline
                      Carlos Antollini
                      wrote on last edited by
                      #11

                      Because * replace the rest of characters and % replace only One Character.... For Example if you have a table with the following records Mother My Mine M* get all the records and M% only the Second Record... Best Regards Carlos Antollini. Sonork ID 100.10529 cantollini

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                      • C Carlos Antollini

                        Because * replace the rest of characters and % replace only One Character.... For Example if you have a table with the following records Mother My Mine M* get all the records and M% only the Second Record... Best Regards Carlos Antollini. Sonork ID 100.10529 cantollini

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                        Mazdak
                        wrote on last edited by
                        #12

                        :eek: :eek: Carlos Antollini wrote: M% only the Second Record... No,Carlos.Thats not true.'%' get all of them too.:) Mazy "The path you tread is narrow and the drop is shear and very high, The ravens all are watching from a vantage point near by, Apprehension creeping like a choo-train uo your spine, Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd

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                        • M Mazdak

                          :eek: :eek: Carlos Antollini wrote: M% only the Second Record... No,Carlos.Thats not true.'%' get all of them too.:) Mazy "The path you tread is narrow and the drop is shear and very high, The ravens all are watching from a vantage point near by, Apprehension creeping like a choo-train uo your spine, Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd

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                          Carlos Antollini
                          wrote on last edited by
                          #13

                          Mazy It's True... :-O I found the following: Kind of match Pattern Match (returns True) No match (returns False) Multiple characters a*a aa, aBa, aBBBa *ab* abc, AABB, Xab aZb, bac Special character a[*]a a*a aaa Multiple characters ab* abcdefg, abc cab, aab Single character a?a aaa, a3a, aBa aBBBa Single digit a#a a0a, a1a, a2a aaa, a10a Range of characters [a-z] f, p, j 2, & Outside a range [!a-z] 9, &, % b, a Not a digit [!0-9] A, a, &, ~ 0, 1, 9 Combined a[!b-m]# An9, az0, a99 abc, aj0 Best Regards....;) Carlos Antollini. Sonork ID 100.10529 cantollini

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                          • C Carlos Antollini

                            Because * replace the rest of characters and % replace only One Character.... For Example if you have a table with the following records Mother My Mine M* get all the records and M% only the Second Record... Best Regards Carlos Antollini. Sonork ID 100.10529 cantollini

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                            Nick Parker
                            wrote on last edited by
                            #14

                            In T-SQL (SQL Server) the % character will do a wildcard beyond that point(all characters)

                            'boo%' results in book, books, boobs....

                            the _ character will act as a single wildcard

                            'b_ok' will find anything for the second character(i.e. - book). Nick Parker

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                            • C Carlos Antollini

                              Because * replace the rest of characters and % replace only One Character.... For Example if you have a table with the following records Mother My Mine M* get all the records and M% only the Second Record... Best Regards Carlos Antollini. Sonork ID 100.10529 cantollini

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                              Dan Pomerchik
                              wrote on last edited by
                              #15

                              Oh thanks a lot , that explains everything :-) :-) - Dan "Intel inside - Idiot outside"

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                              • N Nick Parker

                                Dan Pomerchik wrote: Why can't they just SET a STANDARD and USE it in all db's/platforms/etc.!? How do you think they keep us on our feet? :) Don't you hate it when you forget to log on with the message boards? Nick Parker

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                                Dan Pomerchik
                                wrote on last edited by
                                #16

                                Nick Parker wrote: How do you think they keep us on our feet? :-) Nick Parker wrote: Don't you hate it when you forget to log on with the message boards? Actually, I'm allowing those cookies so I don't have to log on :-) Btw, I tried to change the default password I got and somehow it won't change. Does anyone knows something about it ? - Dan "Intel inside - Idiot outside"

                                1 Reply Last reply
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                                • D Dan Pomerchik

                                  Well , I wrote a little app in VB that queries a table. I used DAO.I created a SQL generator that builds up a statement. But somehow only if I use * instead of % it works. For example , if i execute

                                  select * from Phonebook where Firstname like 'M*'

                                  I will get the appropriate records beginning with M. but if i write:

                                  select * from Phonebook where Firstname like 'M%'

                                  than all i get is an empty recordset! Why is that?! i remember that i used % before and it worked just fine. maybe someone knows what is the problem? thx!

                                  D Offline
                                  D Offline
                                  Dan Pomerchik
                                  wrote on last edited by
                                  #17

                                  Dammit! I'm totaly confused now! Someone said that % is for one char and * for all. Someone else said % is standard and * for DAO/ADO. What happening!? :-) - Dan "Intel inside - Idiot outside"

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