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How to add a primary key to a MySQL table?
...ing keys and indexes to speed up copying:
-- USE THIS FOR MyISAM TABLES:
SET UNIQUE_CHECKS=0;
ALTER TABLE goods DISABLE KEYS;
INSERT INTO goods (... your column names ...) SELECT ... your column names FROM goods_old;
ALTER TABLE goods ENABLE KEYS;
SET UNIQUE_CHECKS=1;
OR
-- USE...
Better way to set distance between flexbox items
To set the minimal distance between flexbox items I'm using margin: 0 5px on .item and margin: 0 -5px on container. For me it seems like a hack, but I can't find any better way to do this.
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How do I get the current version of my iOS project in code?
I would like to be able to get the current version of my iOS project/app as an NSString object without having to define a constant in a file somewhere. I don't want to change my version value in 2 places.
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git - pulling from specific branch
...xt
So I imagine you want to do something like:
git pull origin dev
To set it up so that it does this by default while you're on the dev branch:
git branch --set-upstream-to dev origin/dev
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What is the Java string pool and how is “s” different from new String(“s”)? [duplicate]
What is meant by String Pool ? And what is the difference between the following declarations:
5 Answers
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When to use EntityManager.find() vs EntityManager.getReference() with JPA
...access database state (I mean getter method). Just to change state (I mean setter method). As you should know, getReference returns a proxy object which uses a powerful feature called automatic dirty checking. Suppose the following
public class Person {
private String name;
private Integer...
What is the equivalent to a JavaScript setInterval/setTimeout in Android/Java?
Can anyone tell me if an equivalent for setInterval/setTimeout exists for Android? Does anybody have any example about how to do it?
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Server is already running in Rails
When I am starting rails server using rails s command it is showing A server is already running. Check C:/Sites/folder/Pids/Server.pids
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Why does cURL return error “(23) Failed writing body”?
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How do you clear the SQL Server transaction log?
...n FULL recovery mode. If not, then make sure it is:
ALTER DATABASE testdb SET RECOVERY FULL;
Even if you are taking regular full backups, the log file will grow and grow until you perform a log backup - this is for your protection, not to needlessly eat away at your disk space. You should be perf...