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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
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Rewrite the query into this
SELECT st1.*, st2.relevant_field FROM sometable st1
INNER JOIN sometable st2 ON (st1.relevant_field = st2.relevant_field)
GROUP BY st1.id /* list a unique sometable field here*/
HAVING COUNT(*) > 1
I think st2.relevant_...
What's the difference between size_t and int in C++?
...G_PTR is an unsigned long type used for pointer precision. It is used when casting a pointer to a long type to perform pointer arithmetic.
This type is declared as follows:
typedef unsigned __int3264 ULONG_PTR;
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How do I UPDATE from a SELECT in SQL Server?
... SQL Server , it is possible to insert rows into a table with an INSERT.. SELECT statement:
35 Answers
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Meaning of epsilon argument of assertEquals for double values
...an call assertEquals(Object, Object) instead:
// really you just need one cast because of autoboxing, but let's be clear
assertEquals((Object)Double.MIN_VALUE, (Object)defaultValue);
And, if you really want to look clever:
assertEquals(
Double.doubleToLongBits(Double.MIN_VALUE),
Double....
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
... use the signal/slot mechanism. The absence of Q_OBJECT breaks the qobject_cast and introspection. It can lead to some perplexing behavior, so it's a bad idea.
– Unslander Monica
Apr 7 '16 at 20:39
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SQL selecting rows by most recent date
...eturns a result set with ChargeId, ChargeType, and MostRecentServiceMonth
SELECT
CHARGEID,
CHARGETYPE,
MAX(SERVICEMONTH) AS "MostRecentServiceMonth"
FROM INVOICE
GROUP BY CHARGEID, CHARGETYPE
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How to select first and last TD in a row?
How can you select the first and the last TD in a row?
5 Answers
5
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jQuery UI Tabs - How to Get Currently Selected Tab Index
...answer is there - use ui.index property to get the current index in the tabselect event.....
– redsquare
Nov 5 '09 at 12:27
17
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Input text dialog Android
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Remember to cast that findViewById with (ViewGroup)!
– Martin Erlic
Sep 27 '16 at 17:24
2
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How do you remove all the options of a select box and then add one option and select it with jQuery?
Using core jQuery, how do you remove all the options of a select box, then add one option and select it?
24 Answers
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