I found the solution to my problem myself, but I still don’t quite understand why it didn’t work: I granted privileges to that user on the hosts % and localhost: With these settings I got the results I showed above. When I granted privileges to that user on host it suddenly did work. Apparently % … Read more
I don’t believe MySQL supports dynamic sql. You can do “prepared” statements which is similar, but different. Here is an example: The prepared statements are often used to see an execution plan for a given query. Since they are executed with the execute command and the sql can be assigned to a variable you can approximate the some of … Read more
I would use a composite (multi-column) key. This way you can have t1ID and t2ID as foreign keys pointing to their respective tables as well.
767 bytes in MySQL version 5.6 (and prior versions), is the stated prefix limitation for InnoDB tables. It’s 1,000 bytes long for MyISAM tables. This limit has been increased to 3072 bytes In MySQL version 5.7 (and upwards). You also have to be aware that if you set an index on a big char or varchar field which is utf8mb4 encoded, you have to … Read more
My MySQL says “Incorrect table definition; there can be only one auto column and it must be defined as a key” So when I added primary key as below it started working:
Try: Or: Or: Or: If you install the Launchctl in OSX you can try: MacPorts Note: this is persistent after reboot. Homebrew Binary installer I found that in: https://stackoverflow.com/a/102094/58768
The problem is that you’re using ‘M’ and ‘D’, which are a textual representations, MySQL is expecting a numeric representation of the format 2010-02-06 19:30:13 Try: date(‘Y-m-d H:i:s’) which uses the numeric equivalents. edit: switched G to H, though it may not have impact, you probably want to use 24-hour format with leading 0s.
Difference between the having and where clause in sql is that the where clause can not be used with aggregates, but the having clause can. One way to think of it is that the having clause is an additional filter to the where clause. Which is better : click
= can be used when the subquery returns only 1 value. When subquery returns more than 1 value, you will have to use IN: For example:
This message means you’re trying to compare a number and a string in a WHERE or ON clause. In your query, the only potential place where that could be occurring is ON ac.company_code = ta.company_code; either make sure they have similar declarations, or use an explicit CAST to convert the number to a string. If you turn off strict mode, the error should turn … Read more