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Django queries - id vs pk
When writing django queries one can use both id/pk as query parameters.
2 Answers
2
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How do I delete from multiple tables using INNER JOIN in SQL server
...e in this example. Something like:
begin transaction;
declare @deletedIds table ( id int );
delete from t1
output deleted.id into @deletedIds
from table1 as t1
inner join table2 as t2
on t2.id = t1.id
inner join table3 as t3
on t3.id = t2.id;
delete from t2
...
How can I determine whether a Java class is abstract by reflection
I am interating through classes in a Jar file and wish to find those which are not abstract. I can solve this by instantiating the classes and trapping InstantiationException but that has a performance hit as some classes have heavy startup. I can't find anything obviously like isAbstract() in the C...
PadLeft function in T-SQL
...
I believe this may be what your looking for:
SELECT padded_id = REPLACE(STR(id, 4), SPACE(1), '0')
FROM tableA
or
SELECT REPLACE(STR(id, 4), SPACE(1), '0') AS [padded_id]
FROM tableA
I haven't tested the syntax on the 2nd example. I'm not sure if that works 100% - it may requ...
Spring MVC: Complex object as GET @RequestParam
...ake case and map it to a camel case member of MyObject. For example, ?book_id=4, should be mapped with bookId member of the MyObject?
– Vivek Vardhan
Aug 16 '17 at 12:17
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How to select the last record of a table in SQL?
...e can do is something like
Sql Server
SELECT TOP 1 * FROM Table ORDER BY ID DESC
MySql
SELECT * FROM Table ORDER BY ID DESC LIMIT 1
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How do I kill background processes / jobs when my shell script exits?
... @user1431317 but you could redirect the output of jobs -p to a temporary file and read it from there for kill.
– jarno
Aug 22 at 5:39
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sh...
Nginx location priority
...s.
Regular expressions, in the order they are defined in the configuration file.
If #3 yielded a match, that result is used. Otherwise, the match from #2 is used.
Example from the documentation:
location = / {
# matches the query / only.
[ configuration A ]
}
location / {
# matches any q...
SQL Server: Filter output of sp_who2
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You could try something like
DECLARE @Table TABLE(
SPID INT,
Status VARCHAR(MAX),
LOGIN VARCHAR(MAX),
HostName VARCHAR(MAX),
BlkBy VARCHAR(MAX),
DBName VARCHAR(MAX),
Command VARCHAR(MAX),
CPUTime INT,
DiskIO INT,
...
JavaScript for…in vs for
... @Nosredna: There's an issue about order of iteration for Chrome, filed by none other than John Resig, that is marked as WontFix. code.google.com/p/chromium/issues/detail?id=883 . Even before chrome, the order of iteration was not the same across browsers if you remove and then add a proper...