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IN vs OR in the SQL WHERE Clause
... your specific data to see which is faster.
I tried both on a MySQL with 1000000 rows. When the column is indexed there is no discernable difference in performance - both are nearly instant. When the column is not indexed I got these results:
SELECT COUNT(*) FROM t_inner WHERE val IN (1000, 2000, ...
How can I conditionally require form inputs with AngularJS?
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answered Nov 20 '12 at 3:24
Christian SmithChristian Smith
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Update or Insert (multiple rows and columns) from subquery in PostgreSQL
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edited Sep 17 '10 at 16:14
Milen A. Radev
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RelativeLayout is taking fullscreen for wrap_content
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edited Jun 20 at 9:12
Community♦
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answered Jun 26 '11 at 20:15
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MongoDB, remove object from array
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try..
db.mycollection.update(
{'_id': ObjectId("5150a1199fac0e6910000002")},
{ $pull: { "items" : { id: 23 } } },
false,
true
);
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Persistent invalid graphics state error when using ggplot2
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– Pedro Cavalcante
Sep 14 '18 at 20:38
2
@PedroCavalcanteOliveira I had the problem, after I us...
How do I show a MySQL warning that just happened?
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SHOW WARNINGS is the only method I'm aware of, but you have to run it immediately after a query...
Loop through Map in Groovy?
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edited Sep 19 '17 at 13:07
answered Apr 5 '12 at 23:23
Ja...
How can I use an array of function pointers?
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Android SQLite: nullColumnHack parameter in insert/replace methods
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answered Apr 18 '10 at 19:30
CommonsWareCommonsWare
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