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Convert Unix timestamp into human readable date using MySQL

... Use FROM_UNIXTIME(): SELECT FROM_UNIXTIME(timestamp) FROM your_table; See also: MySQL documentation on FROM_UNIXTIME(). share | improve...
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Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF

...need to generate the OperationID by yourself. The new id can be fetched by SELECT SCOPE_IDENTITY(). – Hakan Winther Aug 26 '09 at 13:29 15 ...
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How to fix .pch file missing on build?

...the bottom of the drop-down menu. At the top left of the Properties Pages, select All Configurations from the drop-down menu. Open the C/C++ tree and select Precompiled Headers Precompiled Header: Select Use (/Yu) Fill in the Precompiled Header File field. Standard is stdafx.h Click Okay If you do n...
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Xcode + remove all breakpoints

...l breakpoints. In Xcode4 press CMD(⌘)+6, in Xcode3 press CMD(⌘)+ALT+B. Select all breakpoints with CMD(⌘)+A and delete them, like deleting text, with backspace. There's no step 3 :) share | i...
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Debugging App When Launched by Push Notification

...opdown. (⌘+<) Than choose your product - 'Run MyApp.app' on the left. Select 'Info' tab on the right. And finally choose "Wait for MyApp.app to launch" option. More here in "Customize Executables in the Scheme Editor" section. EDIT: In case you miss logs in GDB, see Louis Gerbarg's comment t...
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How to delete all datastore in Google App Engine?

...hboard for your app (login on appengine) then datastore --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables). You can do the same programmatically through the remote_api (but I never used it). If you're talki...
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Programmatically creating Markdown tables in R with KnitR

...:) Please note that you might also use the generic S3 method to save a few chars to type, like: pander(head(iris)[, 1:3]) – daroczig Mar 19 '13 at 9:23 add a comment ...
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Java regex email

... I think he downgraded it because one has to manually escape special characters like " before compile. Unless there will be syntax error. – Isuru Madusanka Mar 8 '13 at 19:37 ...
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PostgreSQL query to list all table names?

... What bout this query (based on the description from manual)? SELECT table_name FROM information_schema.tables WHERE table_schema='public' AND table_type='BASE TABLE'; share | im...
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Comments in Android Layout xml

... Note: No comments inside tags. This should be the selected answer – Eslam Sameh Ahmed Feb 14 '15 at 18:02 1 ...