How do I merge two tables in MySQL? I\'ve looked at several other posts on this topic but they don\'t go into enough detail for me.
Please help me what codes to put on save, edit, delete buttons. I created an employee information management. Also how to integrate this button to my database (mysql). Example when I click save it wil
I have a table, say example1 and I\'m using a jdbc statement to delete one of its rows. I have tried various methods, from delete from example1 where id = 1 to statement.addbatch(sql) but it does not
Is it possible to find the time when the row was updated into a table. For Example IDNAMECOURSE ------------------
After running a query like delete from table tablename Can the records be recovered? From what I know Postgresql is开发者_开发百科 just marking the records as deleted.Try pg file dump.
I have a list of user login and logout stamps. Unfortunately a LOGIN entry might not always be followed by a LOGOUT entry.
I ve got a database model开发者_如何学Goize like this, One mother table let\'s call it table_mother, and severals child tables.
I put together a test table for a error I recently came across. It involves the use of LIMIT when attempting to delete a single record from a MySQL table.
I have a database containing all the content updates for a CMS driven website.I want to create a query that will clean out all the old stuff, but leave me the most recent few (5) copies of each page (
I made a mistake and I have unwanted duplicates. I have a table with 4 key fields. A1, k1, k2, k3. A1 is auto increment and the primary key.
加载中,请稍侯......