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how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...n.
You can of course wrap this in a function if you don't want to put the extra code on the client side. You also need a loop for the very rare race condition in that thinking.
There's an example of this in the documentation: http://www.postgresql.org/docs/9.3/static/plpgsql-control-structures.ht...
mongodb: insert if not exists
...u want to do an "upsert". MongoDB has built-in support for this. Pass an extra parameter to your update() call: {upsert:true}. For example:
key = {'key':'value'}
data = {'key2':'value2', 'key3':'value3'};
coll.update(key, data, upsert=True); #In python upsert must be passed as a keyword argumen...
How do I load the contents of a text file into a javascript variable?
...
If you only want a constant string from the text file, you could include it as JavaScript:
// This becomes the content of your foo.txt file
let text = `
My test text goes here!
`;
<script src="foo.txt"></script>
<script>
c...
Declaration suffix for decimal type
...
Whilst not a suffix, we can also declare a character with char c = 'a' using apostrophes around the character.
– Kevin Hogg
Aug 26 '15 at 8:05
...
Asserting successive calls to a mock method
...\mock.py", line 891, in assert_any_call
'%s call not found' % expected_string
AssertionError: mock(4) call not found
I find doing it this way to be easier to read and understand than a large list of calls passed into a single method.
If you do care about order or you expect multiple identical...
Check if instance is of a type
...ype. For example, it can be determined if an object is compatible with the string type like this:
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...oken=[access_token]&method=filemetas&fsids=[1737895653506]&thumb=1&dlink=1&extra=1
5、根据dlink下载 【Web客户端】
https://d.pcs.baidu.com/file/330eb0451pf47ab8514ab5b6f0095c67?fid=2584198580-250528-1737895653506&rt=pr&sign=FDtAERV-DCb740ccc5511e5e8fedcff06b081203-l1%2FQEmhrWYz44Qz...
How to convert currentTimeMillis to a date in Java?
... = java.time.format.DateTimeFormatter.ofPattern("u-M-d hh:mm:ss a O");
var string = zonedDateTime.format(formatter);
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Maven: How to include jars, which are not available in reps into a J2EE project?
... install:install-file -Dfile=cassandra-jdbc-1.1.1.jar -DgroupId=org.apache-extras.cassandra-jdbc -DartifactId=cassandra-jdbc -Dversion=1.1.1 -Dpackaging=jar"
– Mazrick
Jun 30 '12 at 3:14
...
How to fix SSL certificate error when running Npm on Windows?
...ing certs
Set this environment variable to extend pre-defined certs:
NODE_EXTRA_CA_CERTS to "<path to certificate file>"
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I've had to work with npm, pip, maven etc. behind a corporate firewall under Windows - it's not fun. I'll try and keep this platform agnostic/aware where possi...