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Vim Regex Capture Groups [bau -> byau : ceu -> cyeu]
... use \v, meaning that in the pattern after it all ASCII characters except '0'-'9', 'a'-'z', 'A'-'Z' and '_' have a special meaning:
:%s/\v(\w)(\w\w)/\1y\2/g
See:
:help \(
:help \v
share
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impr...
Unique constraint that allows empty values in MySQL
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edited Oct 31 '12 at 19:00
EricC
97611 gold badge1616 silver badges3232 bronze badges
answered Aug 28 ...
Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
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answered Feb 13 '09 at 23:29
Mitch WheatMitch Wheat
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Weighted random numbers
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1) calculate the sum of all the weights
2) pick a random number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is less than that item's weight
Ps...
SQL standard to escape column names?
...il Bourque
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answered May 25 '10 at 1:49
Dean HardingDean Harding
65.8k...
Gradle alternate to mvn install
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sdk/build.gradle:
apply plugin: "maven"
group = "foo"
version = "1.0"
example/build.gradle:
repositories {
mavenLocal()
}
dependencies {
compile "foo:sdk:1.0"
}
$sdk> gradle install
$example> gradle build
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Insert the carriage return character in vim
...n Unix ( \n newlines). I need to insert the carriage return character ( U+000D aka \r ). When I try to paste it from the clipboard ( "+p ) or type it using Ctrl + Shift + u - 000d , the linefeed is inserted ( U+000A ).
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Django fix Admin plural
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edited Sep 13 '17 at 20:37
Chase
3,96311 gold badge1616 silver badges1919 bronze badges
answered Apr...
With MySQL, how can I generate a column containing the record index in a table?
...@curRow + 1 AS row_number
FROM league_girl l
JOIN (SELECT @curRow := 0) r;
The JOIN (SELECT @curRow := 0) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE league_girl (position int, username varchar(10), score int);
INSERT INTO leagu...
How can I append a string to an existing field in MySQL?
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answered Sep 22 '10 at 1:09
Daniel VassalloDaniel Vassallo
301k6666 gold badges475475 silver badges424424 bronze badges
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