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How to show SQL queries run in the Rails console?
...here is the .explain method in Rails 4.
(.to_sql works too, but won't show includes)
Category.includes(:products).explain
=> EXPLAIN for: SELECT "categories".* FROM "categories" 0|0|0|SCAN TABLE categories
EXPLAIN for: SELECT "categories_products".* FROM "categories_products" WHERE "categories_...
‘ld: warning: directory not found for option’
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Click on your project (targets)
Click on Build Settings
if your error includes the -L flag, then delete the values in Library Search Paths
if your error includes the -F flag, then delete the values in Framework Search Paths
And regarding the second error, sorry i can't help you out with th...
Compare two objects in Java with possible null values
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I like this approach. No need to include some ApacheCommons library for things these days.
– Torsten Ojaperv
Dec 21 '16 at 12:59
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“unary operator expected” error in Bash if condition
... valid syntax. (It would also fail with a different error message if $aug1 included white space or shell metacharacters.)
The modern [[ operator has lots of other nice features, including regular expression matching.
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Good introduction to the .NET Reactive Framework [closed]
...far as I can tell this wiki doesn't so much as tell you which reference to include. Which is rather...frustrating.
– George Mauer
Sep 15 '10 at 14:07
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Why are dates calculated from January 1st, 1970?
...0 if stored as a 32-bit integer.
MillisecondsUsed by older Java libraries, including the bundled java.util.Date class and the Joda-Time library.
MicrosecondsUsed by databases such as Postgres.
NanosecondsUsed by the new java.time package in Java 8.
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Visual Studio jump to next error shortcut?
... Better than the default VS shortcut which seem to also always include warnings, so here you can pick if you want to include warnings or not which is nice.
– jeromej
May 26 at 13:16
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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...d into the model.
It looks a lot like the whitelisting that was formerly included in ActiveRecord models, but it makes more sense for it to be in the controller.
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How to get the absolute coordinates of a view
... in v2.1 didn't work any better. Both methods gave me 0s for everything. I included a code snippet above.
– Steve Haley
Feb 9 '10 at 12:23
77
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Is the NOLOCK (Sql Server hint) bad practice?
... NOLOCK == i do not care if committed rows are missed, uncommited rows are included, in rare cases the same row is returned more than once, and in very rare cases rows are returned which do not match my query. (see blogs.msdn.com/b/sqlcat/archive/2007/02/01/… , found from another SO q'n on this to...