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How to export query result to csv in Oracle SQL Developer?
...take an export to your local system from sql developer.
Path : C:\Source_Table_Extract\des_loan_due_dtls_src_boaf.csv
SPOOL "Path where you want to save the file"
SELECT /*csv*/ * FROM TABLE_NAME;
share
...
Paging with Oracle
...ults were returned slightly quicker the first time I ran the queries on my table (113 million+ rows) for the new method:
New method: 0.013 seconds.
Old method: 0.107 seconds.
However, as @wweicker mentioned, the explain plan looks much worse for the new method:
New method cost: 300,110
Old met...
Passing Data between View Controllers
...igationController pushViewController:vc animated:NO];
fire block
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:
(NSIndexPath *)indexPath {
NSString *voucher = vouchersArray[indexPath.row];
if (sourceVC.selectVoucherBlock) {
sourceVC.selectVoucherBlock(voucher)...
How to create index on JSON field in Postgres?
...
Found:
CREATE TABLE publishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the lat...
Check if a given key already exists in a dictionary
...
@Mohan Gulati: You understand that a dictionary is a hashtable of keys mapped to values, right? A hashing algorithm converts the key to an integer and the integer is used to find a location in the hash table that matches. en.wikipedia.org/wiki/Hash_table
– hug...
What is a 'thunk'?
...ayed
computation (similar to a closure)
a feature of some virtual function
table implementations (similar to a
wrapper function)
a mapping of machine data from one
system-specific form to another,
usually for compatibility reasons
I have usually seen it used in the third context.
http://en.wikipe...
Why are all fields in an interface implicitly static and final?
...tatic final does not mean they must be compile-time constants, or even immutable. You can define e.g.
interface I {
String TOKEN = SomeOtherClass.heavyComputation();
JButton BAD_IDEA = new JButton("hello");
}
(Beware that doing this inside an annotation definition can confuse javac, relatin...
I do not want to inherit the child opacity from the parent in CSS
...nt effects.
.wrapper {
width: 630px;
height: 420px;
display: table;
background: linear-gradient(
rgba(0,0,0,.8),
rgba(0,0,0,.8)),
url('http://cdn.moviestillsdb.com/sm/35bc3c6a2b791425de6caf8b9391026e/rambo-iii.jpg');
}
h1 {
display: table-cell;
vertical-a...
Fastest way to check if a file exist using standard C++/C++11/C?
... or C++ way to check for existence, though.
– IInspectable
Sep 9 '13 at 21:32
10
stat() seems to ...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
...e the strings of a field within a group by query. So for example, I have a table:
14 Answers
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