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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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@blub: If you create a unique key on geb and topic it will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)).
– chaos
Aug 2 '09 at 13:43
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Is it safe to shallow clone with --depth 1, create commits, and pull updates again?
...fied number of revisions.
That stems from commits like 0d7d285, f2c681c, and c29a7b8 which support clone, send-pack /receive-pack with/from shallow clones.
smart-http now supports shallow fetch/clone too.
All the details are in "shallow.c: the 8 steps to select new commits for .git/shallow".
Upd...
PostgreSQL: Can you create an index in the CREATE TABLE definition?
...BLE syntax. PostgreSQL does however create an index for unique constraints and primary keys by default, as described in this note:
PostgreSQL automatically creates an index for each unique constraint and primary key constraint to enforce uniqueness.
Other than that, if you want a non-unique in...
Bash, no-arguments warning, and case decisions
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I interpreted "and" as "otherwise", assuming that the message would be some help text. But I'm sure Werner is able to figure out what that line does and whether he wants it :)
– Thomas
Mar 11 '10 at 19...
How to declare a structure in a header that is to be used by multiple files in c?
...each source file needed it.
The right way is putting it in an header file, and include this header file whenever needed.
shall we open a new header file and declare the structure there and include that header in the func.c?
This is the solution I like more, because it makes the code highly modular. ...
How do you rename a table in SQLite 3.0?
... postfix: "",
imageUploader: {
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Change Canvas.Left property in code behind?
I have a rectangle in my XAML and want to change its Canvas.Left property in code behind:
3 Answers
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Undoing accidental git stash pop
...ink there are always two commits for a stash, since it preserves the index and the working copy (so often the index commit will be empty). Then git show them to see the diff and use patch -R to unapply them.
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How to pass parameters to a partial view in ASP.NET MVC?
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How do you access the object? Model.firstName and their like throw an exception that object doesn't have a 'firstName' property
– ashes999
Apr 20 '13 at 1:22
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UITableView + Add content offset at top
...orInsets:[self.tableView contentInset]];
– David Hernandez
Sep 5 '14 at 16:28
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