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How do I add a foreign key to an existing SQLite table?
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You can't.
Although the SQL-92 syntax to add a foreign key to your table would be as follows:
ALTER TABLE child ADD CONSTRAINT fk_child_parent
FOREIGN KEY (parent_id)
REFERENCES parent(id);
SQLite doesn't suppo...
The Difference Between Deprecated, Depreciated and Obsolete [closed]
...ot sure it's fair to say the accepted answer is wrong considering that the question explicitly asks what the terms mean "in a programming context". Your answer even concedes that the IT industry doesn't use the terms according to the definitions you provide.
– Martin Ellis
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How many levels of pointers can we have?
... limit, it is the effective upper bound all spec-compliant compilers are required to support. It could be lower than the vendor-specific upper bound, of course. Rephrased differently (to align it with the OP's question), it is the maximum allowed by the spec (anything else would be vendor-specific.)...
Getting current directory in .NET web application
...e website.
You want HttpRuntime.AppDomainAppPath.
If you're in an HTTP request, you can also call Server.MapPath("~/Whatever").
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SQL Server - copy stored procedures from one db to another
I am new to SQL, and what I needed to do was to combine 2 .mdf databases into one. I did that using SQL Server 2008 Manager - Tasks > Import/Export tables.The tables and views were copied successfully, but there are no Stored procedures in the new database. Is there any way to do that?
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What's a concise way to check that environment variables are set in a Unix shell script?
...ed to set DEST non-empty"}
Or, better (see section on 'Position of double quotes' below):
: "${STATE?Need to set STATE}"
: "${DEST:?Need to set DEST non-empty}"
The first variant (using just ?) requires STATE to be set, but STATE="" (an empty string) is OK — not exactly what you want, but the al...
Multiple Updates in MySQL
...ows at once, is there a way to update multiple rows at once (as in, in one query) in MySQL?
17 Answers
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How to convert Linux cron jobs to “the Amazon way”?
... so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way".
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VIM + JSLint?
...is makes in mylintrun.js output a error list that can be used with the VIM quickfix window (:copen).
Now set the following in VIM:
set makeprg=cat\ %\ \\\|\ /my/path/to/js\ /my/path/to/mylintrun.js\ %
set errorformat=%f:%l:%c:%m
where you have to change /my/path/to/js to the path to SpiderMonkey...
Correct way to close nested streams and writers in Java [duplicate]
Note: This question and most of its answers date to before the release of Java 7. Java 7 provides Automatic Resource Management functionality for doing this easilly. If you are using Java 7 or later you should advance to the answer of Ross Johnson .
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