Hi good morning everyone, I have a question I hope you can help me.
I need to modify tables of a database that I did with MySQL Workbench, this database has several tables and all tables have user information, thousands of records.
Can you change this database with records from MySQL Workbench and then export all the changes again with all the amendments and records?
The changes I want to do is add new additional fields to some tables.
Much appreciate your help.
If you only want to add plus fields (columns?) you can do them without any export or import needed with either MySQL Workbench or SQL queries.
MySQL change table: ALTER TABLE Syntax
Or in MySQL Workbench right click on the table than click Alter table... Add the new columns than click Apply, this will add the new columns without hurting any already added data. You can also specify the default value.
Related
I created two tables like this
and I want to change the added data's id so I use
alter table member auto_increment=5;
after this, it couldn't show my member table. It shows
error 2013: lost connection to MySQL server during query.
I thought my table is too big to run, so I changed the limit and the DBMS time out, but it didn't work either. Can someone tell me what's the problem now?
I found the problem. Don't edit your MySQL database when you're connecting it with your Python Flask program. Edit means any CRUD actions.
I am using the Data Export functionality to create a dump of a database in MySQL Workbench. Once I select the database, I want to select a subset of the tables on the right side in the screenshot. However, the list of tables is not displayed. How do I make a single-file dump of a subset of tables of a database?
Click on one row and you see the tables
It may sound dumb from me, but have you tried to click on the database choosen, not just check it.
Try to click the name of the database.
I have a production database in which I have multiple tables. There is one table in which I store the server responses for the API calls which I receive.
Now that particular table is not working properly. I mean, the data is getting added into that table.
When I click on info button of the table, am getting the details which include number of rows and all. I can see that it's increasing. But the problem is that, whenever I try to execute any query on that table, my MySql workbench crashes.
I tried repair table indoor.ServerResponse; but again this query also doesn't work. It keeps on running and somewhere down the line, it freezes.
I just have few thousand rows in that table.
Now my question is :
1) How do I repair the table ? Did I lose it all?
2) How do I make sure that this doesn't happen in future? As this is the prod database.
3) I am also not able to Alter other tables in the database. But the queries run fine. Why is it so?
P.S. Am using MySql workbench.
I'm working on a version control program, and I would like to implement database structure versioning as well.
Is there a way to get a list of all the queries that have altered the databse structure in any way?
For example I added a column to the 'users' table called 'remember_token'. Is there a way I can get the specific query that was executed on the MySQL server in order to add that column?
You may want to enable the mysql query log and then filter on ALTER queries or anything you need
Recently I have dumped some data from a magento theme into mysql, I want to undump or remove that from mysql database and want to restore the previous database.
check the tables used in dump.sql after unzipping the archive file. drop the tables that were created while installing the theme.
To check which tables were created, check create table statement in your dump.sql. After that delete data from other tables which were not created by your theme.
Make sure you don't delete the entire table, use proper where clauses. If you need any more assistance, please post your dump.sql.
PS: Though I am not too sure if SO would allow large portion of code, though try it out.