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SQL - HAVING vs. WHERE
I have the following two tables:
8 Answers
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How should I choose an authentication library for CodeIgniter? [closed]
... set
Very good documentation
Simple and elegant database design (just 4 DB tables)
Most features are optional and easily configured
Language file support
reCAPTCHA supported
Hooks into CI's validation system
Activation emails
Login with email, username or both (configurable)
Unactivated accounts aut...
The difference between fork(), vfork(), exec() and clone()
...s big. I presume this is because the kernel still has to copy all the page tables.
– Martina Ferrari
Mar 15 '16 at 3:04
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Why are C# interface methods not declared abstract or virtual?
...phic with regards to the interface type, so it needs a slot on the virtual table to allow virtual method dispatching.
– Jordão
Sep 1 '10 at 20:06
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Remove an entire column from a data.frame in R
... long amount of time and/or fail due to out of memory errors. Package data.table helps address this problem with the := operator:
library(data.table)
> dt <- data.table(a = 1, b = 1, c = 1)
> dt[,a:=NULL]
b c
[1,] 1 1
I should put together a bigger example to show the differences. I...
How to change height of grouped UITableView header?
I know how to change the height of the section headers in the table view. But I am unable to find any solution to change the default spacing before the first section.
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Hibernate dialect for Oracle Database 11g?
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Unfortunately does not help for "ORA-01754: a table may contain only one column of type LONG".
– Jan Goyvaerts
Mar 6 '13 at 10:52
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Looping through a hash, or using an array in PowerShell
I'm using this (simplified) chunk of code to extract a set of tables from SQL Server with BCP .
7 Answers
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MySql export schema without data
...nsider using the --single-transaction option if you don't want or can't do table locks.
– Jim
Jan 22 '13 at 21:55
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How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
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