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SQL Switch/Case in 'where' clause
...
declare @locationType varchar(50);
declare @locationID int;
SELECT column1, column2
FROM viewWhatever
WHERE
@locationID =
CASE @locationType
WHEN 'location' THEN account_location
WHEN 'area' THEN xxx_location_area
WHEN 'division' THEN xxx_location_division
END...
Linq select objects in list where exists IN (A,B,C)
I have a list of orders .
I want to select orders based on a set of order statuses.
5 Answers
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Java generics - why is “extends T” allowed but not “implements T”?
...and desirably at run time ) anything assigned to the generic can safely be cast to any of the specified interfaces. This is not the case the way java is implemented now. But it would be nice :)
– peterk
May 7 '16 at 3:13
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Ruby: Easiest Way to Filter Hash Keys?
...answer: Even though this is answer (as of the time of this comment) is the selected answer, the original version of this answer is outdated.
I'm adding an update here to help others avoid getting sidetracked by this answer like I did.
As the other answer mentions, Ruby >= 2.5 added the Hash#sli...
Function vs. Stored Procedure in SQL Server
...-----------+----------------------------------------+
| We can't use SP in SELECT/ | We can use UDF in SELECT/ WHERE/ |
| WHERE/ HAVING statement. | HAVING statement. |
+---------------------------------+----------------------------------------+
| We can use ex...
MVC3 DropDownListFor - a simple example?
...uirements. Now, however, how is MVC FW supposed to map the value that is selected on this drop-down back into the simple string property on my view model?
...
How do I spool to a CSV formatted file using SQLPLUS?
...you want for numbers (avoid scientific notation on IDs)
spool myfile.csv
select table_name, tablespace_name
from all_tables
where owner = 'SYS'
and tablespace_name is not null;
Output will be like:
TABLE_PRIVILEGE_MAP ,SYSTEM
SYSTEM_PRIVILEGE_MAP...
Checking for empty arrays: count vs empty
...
Alternatively, you can cast the variable as a boolean (implicitly or explicitly):
if( $value )
{
// array is not empty
}
if( (bool) $value )
{
// array is still not empty
}
This method does generate an E_NOTICE if the variable is not define...
MySQL SELECT only not null values
Is it possible to do a select statement that takes only NOT NULL values?
9 Answers
9
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How can prepared statements protect from SQL injection attacks?
...ample shows it (all examples in PHP/Mysql):
$expected_data = 1;
$query = "SELECT * FROM users where id=$expected_data";
will produce a regular query
SELECT * FROM users where id=1
while this code
$spoiled_data = "1; DROP TABLE users;"
$query = "SELECT * FROM users where id=$spoiled_da...