Date: March 30, 2005 12:29AM SELECT COUNT(*) will always return a ZERO (0) if your data is not found. From that itself you can ascertain that no such data exists. As for the rest, try what Sean Nolan said - there might be problems with other parts of your code and the connector...
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To connect to a specific database, type use [database name]; and hit enter. And that's it! You can now access and modify data in the community server. Check out tutorials and articles on MySQL and DigitalOcean for more information on how to use MySQL. How to connect to a MySQL data...
Learn how to check what your MySQL version is. We'll also show you how to upgrade your database to the latest MySQL version.
If the manual covers the syntax you are using, but you have an older version of MySQL Server, you should check the MySQL change history to see when the syntax was implemented. In this case, you have the option of upgrading to a newer version of MySQL Server. ...
4. Analyze Tables using Mysqlcheck The following analyzes employee table that is located in thegeekstuff database. # mysqlcheck -a thegeekstuff employee -u root -p Enter password: thegeekstuff.employee Table is already up to date Internally mysqlcheck command uses “ANALYZE TABLE” command. Wh...
Other programs that are not related to MySQL do not behave correctly. Your system restarted unexpectedly. (A faulty user-level program should never be able to take down your system.) In this case, you should start by checking all your cables and run some diagnostic tool to check your hardwa...
Here, Current Date. Enter the TODAY function in the first cell of the column. =TODAY() You will see the current date in the whole column. Use the Power Pivot Measure to Get the Current Date Select the dataset range and click: Insert > PivotTable. Select the sheet option and check Add...
MySQL installed and secured on the server, as outlined inHow To Install MySQL on Ubuntu 20.04. This guide was verified with a non-root MySQL user, created using the process described inStep 3. Note: Please note that many RDBMSs use their own unique implementations of SQL. Although the comma...
Date: March 28, 2005 04:08PM Hi, How do you check the existence of data? I have tried to do the followings, but it does not seem to work: string command = "SELECT COUNT(*) FROM table WHERE username = 'DoesNotExist'; MySqlCommand cmd = new MySqlCommand(command,connection); if...