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Create a temporary table in a SELECT statement without a separate CREATE TABLE
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CREATE TEMPORARY TABLE IF NOT EXISTS table2 AS (SELECT * FROM table1)
From the manual found at http://dev.mysql.com/doc/refman/5.7/en/create-table.html
You can use the TEMPORARY keyword when creating a table. A TEMPORARY table is visible only to the current ses...
What predefined macro can I use to detect clang?
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121
To get a list of all the predefined macros that the compiler uses, use this:
clang -dM -E -x c...
SQL Joins Vs SQL Subqueries (Performance)?
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Is it safe to assume strict comparison in a JavaScript switch statement?
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Take a look at ECMA 262, section 12.11, the second algorithm, 4.c.
c. If input is equal to clauseSelector as defined by the === operator, then...
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How to solve error message: “Failed to map the path '/'.”
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Changing the maximum length of a varchar column?
I'm trying to update the length of a varchar column from 255 characters to 500 without losing the contents. I've dropped and re-created tables before but I've never been exposed to the alter statement which is what I believe I need to use to do this. I found the documentation here: ALTER TABLE (Tra...
Can't delete virtual device from Eclipse, android
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290
In Linux/*nix and OSX:
Find the .android folder in your $HOME directory.
In .android there s...
Why does an NSInteger variable have to be cast to long when used as a format argument?
... a 64-bit integer. The %i format, on the other hand, is for int, which is 32-bit. So the format and the actual parameter do not match in size.
Since NSInteger is 32-bit or 64-bit, depending on the platform, the compiler recommends
to add a cast to long generally.
Update: Since iOS 7 supports 64-bi...
Python, add trailing slash to directory string, os independently
How can I add a trailing slash ( / for *nix, \ for win32) to a directory string, if the tailing slash is not already there? Thanks!
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