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  4. Checking database has a table.

Checking database has a table.

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  • Y yuvarajujogi

    How to check whether a database has a table out of that database

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #2

    This might help you:

    select count(table_name) from information_schema.tables

    However, some databases might not support it.

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    • Y yuvarajujogi

      How to check whether a database has a table out of that database

      L Offline
      L Offline
      Lost User
      wrote on last edited by
      #3

      yuvarajujogi wrote:

      How to check whether a database has a table out of that database

      Why, will it also hold tables out of "other" databases? You can check if a table exists by quering sys.tables in Sql Server. Other database-servers will have similar options.

      Bastard Programmer from Hell :suss:

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      • Y yuvarajujogi

        How to check whether a database has a table out of that database

        R Offline
        R Offline
        RDBurmon
        wrote on last edited by
        #4

        It depends which database you are using. If you are using MSAccess , then you can write the code in any language and using TABLE collection you can count and note the tables name If you are using SQL SERVER , then here is querey "SELECT * FROM Sys.Tables" If you are using MySQL , then here is query SHOW [FULL] TABLES [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr]

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        • Y yuvarajujogi

          How to check whether a database has a table out of that database

          P Online
          P Online
          PIEBALDconsult
          wrote on last edited by
          #5

          Yet another way to get a list of tables in an ADO.net-supported database:

          System.Data.Common.DbConnection con =
          this.command.Connection as System.Data.Common.DbConnection ;

          if ( con != null )
          {
          System.Data.DataTable temp = con.GetSchema
          (
          "TABLES"
          ) ;

          temp.DefaultView.RowFilter = "TABLE\_TYPE='TABLE' OR TABLE\_TYPE='BASE TABLE'" ;
          temp.DefaultView.Sort = "TABLE\_NAME" ;
          
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          • Y yuvarajujogi

            How to check whether a database has a table out of that database

            J Offline
            J Offline
            jschell
            wrote on last edited by
            #6

            yuvarajujogi wrote:

            How to check whether a database has a table out of that database

            What are you going to do if it doesn't?

            Y 1 Reply Last reply
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            • Y yuvarajujogi

              How to check whether a database has a table out of that database

              M Offline
              M Offline
              Mohibur Rashid
              wrote on last edited by
              #7

              Hey, What database are you talking about? MySQL, Microsoft SQL Server ORACLE ....

              Y 1 Reply Last reply
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              • M Mohibur Rashid

                Hey, What database are you talking about? MySQL, Microsoft SQL Server ORACLE ....

                Y Offline
                Y Offline
                yuvarajujogi
                wrote on last edited by
                #8

                Sql Server

                M L 2 Replies Last reply
                0
                • Y yuvarajujogi

                  Sql Server

                  M Offline
                  M Offline
                  Mohibur Rashid
                  wrote on last edited by
                  #9

                  Once Again, What version of SQL Server? SQL Server 2000 SQL Server 2003 or What?

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                  • J jschell

                    yuvarajujogi wrote:

                    How to check whether a database has a table out of that database

                    What are you going to do if it doesn't?

                    Y Offline
                    Y Offline
                    yuvarajujogi
                    wrote on last edited by
                    #10

                    I want to create a table in that database similar to the table in another database.

                    K 1 Reply Last reply
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                    • Y yuvarajujogi

                      Sql Server

                      L Offline
                      L Offline
                      Lost User
                      wrote on last edited by
                      #11

                      You can use this code to check if a table exists.

                      IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[MyTable]') AND type in (N'U'))
                      PRINT 'MyTable exists.'
                      ELSE
                      PRINT 'MyTable does not exist.'

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                      • Y yuvarajujogi

                        I want to create a table in that database similar to the table in another database.

                        K Offline
                        K Offline
                        Karthik Harve
                        wrote on last edited by
                        #12

                        try with this..

                        If Object_ID('dbo.MyTable') IS NOT NULL
                        PRINT 'MyTable Exists'
                        Else
                        PRINT 'MyTable Not Exists'

                        with regards Karthik Harve

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                        • Y yuvarajujogi

                          How to check whether a database has a table out of that database

                          K Offline
                          K Offline
                          Karthik Harve
                          wrote on last edited by
                          #13

                          try with this..

                          If Object_ID('dbo.MyTable') IS NOT NULL
                          PRINT 'MyTable Exists'
                          Else
                          PRINT 'MyTable Not Exists'

                          with regards Karthik Harve

                          L 1 Reply Last reply
                          0
                          • K Karthik Harve

                            try with this..

                            If Object_ID('dbo.MyTable') IS NOT NULL
                            PRINT 'MyTable Exists'
                            Else
                            PRINT 'MyTable Not Exists'

                            with regards Karthik Harve

                            L Offline
                            L Offline
                            Lost User
                            wrote on last edited by
                            #14

                            If there is a view or stored procedure with the same name, this script will fail.

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