Skip to content
Advertisement

Check if a string contains only number

I am trying to check if a string contains only valid number in the following format But it should reject anything that contains non-numbers including double dots. Here are some invalid formats I have done the following When seems to work except for the case where there is more than one dot in the string. How can I tweak the

type conversion failure

I have a table that looks something like this: The empty fields can be null or an empty string, I’m not sure. I want to update the firstName field to be all the characters in the name field until the -, whether firstname was empty or not. It doesn’t matter what was in there before the update. I tried the

Can I generate a deployment script from a dacpac

I’ve got a .dacpac file that’s being called by MSBuild and published to a QA database for testing. This publish is failing and the error I’m getting back from them is a generic “an error has occurred” message. I was hoping I could generate the deployment script from the dacpac and walk through it to see where the problem is

Get max value sql in Java

*I don’t get value of max in function other. Value return is “0”. I trying but not success 🙁 Image Help!!! Answer You’re not using it as it should be. First of all, you use AVG but want MAX so change it to MAX(GiaSP). Second, you must use rs.next() to have your cursor go to the first row and then

Why should I use EXISTS() function in MySQL?

I have this query: And when I remove that EXISTS() function, still my code works: So why should I write that? What’s its advantage? Answer In short: EXISTS returns when it finds the first result instead of fetching all matching records (so it is more efficient when there are multiple records matching the criteria) EXISTS is semantically correct. When there

Advertisement