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Multiple Updates in MySQL
...6.7x faster for me than the TRANSACTION method. I tried on a set of both 3,000 and 30,000 rows.
The TRANSACTION method still has to run each individually query, which takes time, though it batches the results in memory, or something, while executing. The TRANSACTION method is also pretty expensive ...
How to convert float to varchar in SQL Server
...uncating fractional part or some other drawback).
declare @float float = 1000000000.1234;
select format(@float, N'#.##############################');
output:
1000000000.1234
this has the further advantage (in my case) to make thousands separator and localization easy:
select format(@float, N'...
Add comma to numbers every three digits
...gt;
</head>
<body>
<div class="numbers">1000</div>
<div class="numbers">2000000</div>
</body>
</html>
Output:
1,000
2,000,000
share
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How to fix Git error: object file is empty?
...1a186fa32795e39f94d5c: invalid sha1 pointer in cache-tree
dangling blob 03511c9868b5dbac4ef1343956776ac508c7c2a2
missing blob 8b61d0135d3195966b443f6c73fb68466264c68e
missing blob e89896b1282fbae6cf046bf21b62dd275aaa32f4
dangling blob dd09f7f1f033632b7ef90876d6802f5b5fede79a
missing blob caab8e3d18f...
How to bind function arguments without binding this?
...
11
brings es6 to the table, still uses var :(
– Daniel Kobe
Nov 20 '16 at 3:47
...
How do you express binary literals in Python?
...0111
3 79228162514264337593543950336 0o377 0xdeadbeef
100_000_000_000 0b_1110_0101
Changed in version 3.6: Underscores are now allowed for grouping purposes in literals.
Other ways of expressing binary:
You can have the zeros and ones in a string object wh...
How to get start and end of day in Javascript?
...me;
DateTime.local().startOf('day').toUTC().toISO(); //2017-11-16T18:30:00.000Z
DateTime.local().endOf('day').toUTC().toISO(); //2017-11-17T18:29:59.999Z
DateTime.fromISO(new Date().toISOString()).startOf('day').toUTC().toISO(); //2017-11-16T18:30:00.000Z
remove .toUTC() if you need only the lo...
Sublime - delete all lines containing specific value
... My machine got stuck for several minutes when I did Ctrl+Shift+K with 200,000 lines selected.
– Przemek D
Aug 28 '17 at 11:43
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How to find all tables that have foreign keys that reference particular table.column and have values
...
Alexander Yancharuk
11.1k44 gold badges4343 silver badges5252 bronze badges
answered Jul 15 '09 at 19:27
Alex N.Alex N.
...
Improve INSERT-per-second performance of SQLite
...formance of a C application can vary from 85 inserts per second to over 96,000 inserts per second!
10 Answers
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