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How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
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How can I get a list of all functions stored in the database of a particular schema in PostgreSQL?
...query that's used internally connect to a database with psql and supply an extra "-E" (or "--echo-hidden") option and then execute the above command.
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T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
I have seen a couple of questions related to string concatenation in SQL.
I wonder how would you approach the opposite problem: splitting coma delimited string into rows of data:
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How to sort an array by a date property
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Simplest Answer
array.sort(function(a,b){
// Turn your strings into dates, and then subtract them
// to get a value that is either negative, positive, or zero.
return new Date(b.date) - new Date(a.date);
});
More Generic Answer
array.sort(function(o1,o2){
if (sort_o1_bef...
How to print pandas DataFrame without index
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print df.to_string(index=False)
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How to make Twitter bootstrap modal full screen
...en for screen smaller than 768px.
Take a look at the following code:
/* Extra small devices (less than 768px) */
@media (max-width: 767px) {
.modal-fullscreen-xs-down {
padding: 0 !important;
}
.modal-fullscreen-xs-down .modal-dialog {
width: 100%;
height: 100%;
margin: 0;
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Oracle TNS names not showing when adding new connection to SQL Developer
...%\tnsnames.ora before %TNS_ADMIN%\tnsnames.ora, and that's where I had the extra tnsnames.ora file.
– MBWise
Jun 30 at 14:39
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Visual C++: How to disable specific linker warnings?
... from the fact that it can't be turned off. (Noted here since there's zero extra information at that link.)
– Ben M
Dec 7 '12 at 21:14
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Calling JMX MBean method from a shell script
...Url
def serverUrl = 'service:jmx:rmi:///jndi/rmi://localhost:9003/jmxrmi'
String beanName = "com.webwars.gameplatform.data:type=udmdataloadsystem,id=0"
def server = JmxFactory.connect(new JmxUrl(serverUrl)).MBeanServerConnection
def dataSystem = new GroovyMBean(server, beanName)
println "Connected...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...eness on a single collection if you use other types for the key, such as a string in your example.
– mstearn
Jan 13 '11 at 6:18
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