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Is having an 'OR' in an INNER JOIN condition a bad idea?
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114
This kind of JOIN is not optimizable to a HASH JOIN or a MERGE JOIN.
It can be expressed as a...
#ifdef replacement in the Swift language
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17 Answers
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How to read a file into a variable in shell?
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1120
In cross-platform, lowest-common-denominator sh you use:
#!/bin/sh
value=`cat config.txt`
ec...
How to pass variable number of arguments to a PHP function
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132
If you have your arguments in an array, you might be interested by the call_user_func_array fu...
Should I size a textarea with CSS width / height or HTML cols / rows attributes?
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12 Answers
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How to access test resources in Scala?
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answered Mar 12 '11 at 23:15
MitchellMitchell
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Generate full SQL script from EF 5 Code First Migrations
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answered Dec 18 '12 at 18:44
Matt WilsonMatt Wilson
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How can I get the active screen dimensions?
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How to find memory leak in a C++ code/project?
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19 Answers
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How to check for Is not Null And Is not Empty string in SQL server?
...s UNKNOWN for these rather than TRUE.
CREATE TABLE T
(
C VARCHAR(10)
);
INSERT INTO T
VALUES ('A'),
(''),
(' '),
(NULL);
SELECT *
FROM T
WHERE C <> ''
Returns just the single row A. I.e. The rows with NULL or an empty strin...