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SQLite UPSERT / UPDATE OR INSERT
...rom players where user_name='steven'), and INSERT if it didn't. No go.
And then, finally I used the brute force, with success. The logic is, for each UPSERT that you want to perform, first execute a INSERT OR IGNORE to make sure there is a row with our user, and then execute an UPDATE query with exa...
How do I compare two string variables in an 'if' statement in Bash? [duplicate]
...nd double quotes where the variable contains this:
if [ "$s1" == "$s2" ]; then
# ^ ^ ^ ^
echo match
fi
The ^s show the blank spaces you need to leave.
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Is there any way to create a blank solution (.sln) file first and then add projects?
...nnoyed me because (to my knowledge) you cannot create a solution first and then add new/existing projects to it. The only way I know how to create a solution is to create a project and specify the solution name for it.
...
When to use CouchDB over MongoDB and vice versa
...plan to have a mobile component, or need desktop users to work offline and then sync their work to a server you need CouchDB.
If your code will run only on the server then go with MongoDB
That's it. Unless you need CouchDB's (awesome) ability to replicate to mobile and desktop devices, MongoDB has...
Using StringWriter for XML Serialization
...d <?xml version="1.0" encoding="utf-8"?><test/> to the string, then declaring the SqlParameter to be of type SqlDbType.Xml or SqlDbType.NVarChar would give you the "unable to switch the encoding" error. Then, when inserting manually via T-SQL, since you switched the declared encoding to ...
How can I return pivot table output in MySQL?
...
COUNT(
CASE
WHEN P.`action`='EMAIL'
THEN 1
ELSE NULL
END
) AS 'EMAIL',
COUNT(
CASE
WHEN P.`action`='PRINT' AND P.`pagecount` = '1'
THEN P.`pagecount`
ELSE NULL
END
) AS 'P...
How do I grant myself admin access to a local SQL Server instance?
...access sql server's data by copying the data files to another machine (and then copying back if needed), so your only way around this is to limit administrative permissions only to the ones who deserve it..
– yoel halb
Oct 11 '12 at 20:18
...
How to create a project from existing source in Eclipse and then find it?
...ry where your project is unless your project is already in the workspace - then you must not uncheck the "use default location" box
Click 'next'.
Eclipse should be smart enough to figure out what's going on. After clicking next, it will show you all of the files it found in that directory. It wil...
Error handling in Bash
...$1"
local message="$2"
local code="${3:-1}"
if [[ -n "$message" ]] ; then
echo "Error on or near line ${parent_lineno}: ${message}; exiting with status ${code}"
else
echo "Error on or near line ${parent_lineno}; exiting with status ${code}"
fi
exit "${code}"
}
trap 'error ${LINEN...
How to find Unused Amazon EC2 Security groups
...-groups --query 'SecurityGroups[*].GroupId' --output text | tr '\t' '\n'
Then get all security groups tied to an instance, then piped to sort then uniq:
aws ec2 describe-instances --query 'Reservations[*].Instances[*].SecurityGroups[*].GroupId' --output text | tr '\t' '\n' | sort | uniq
Then put ...