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How to search a specific value in all tables (PostgreSQL)?
... varying', 'text', 'character', 'char', 'varchar')
LOOP
sql := concat('SELECT ', rec1."column_name", ' AS "found" FROM ',rec1."table_schema" , '.',rec1."table_name" , ' WHERE UPPER(',rec1."column_name" , ') LIKE UPPER(''','%my_substring_to_find_goes_here%' , ''')');
RAISE NOTICE '%',...
Hash and salt passwords in C#
...
What blowdart said, but with a little less code. Use Linq or CopyTo to concatenate arrays.
public static byte[] Hash(string value, byte[] salt)
{
return Hash(Encoding.UTF8.GetBytes(value), salt);
}
public static byte[] Hash(byte[] value, byte[] salt)
{
byte[] saltedValue = value.Concat...
Does pandas iterrows have performance issues?
...y slow to update a row at a time. Much better to create new structures and concat.
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Datatype for storing ip address in SQL Server
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concat_ws('.',(IPAddr & 0xFF000000)>>24,(IPAddr & 0xFF0000)>>16,(IPAddr & 0xFF00)>>8, (IPAddr & 0xFF)) will convert a unsigned long containing an IP adress to a human readable form.
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Is it possible to dynamically compile and execute C# code fragments?
...bly. The analogy: I can create an HTML page using the DOM, or using string concats.
– Cheeso
May 14 '09 at 21:49
here'...
Are HLists nothing more than a convoluted way of writing tuples?
...
write a generic prepend/append function
write a reverse function
write a concat function
...
You can do all of that with tuples of course, but not in the general case. So using HLists makes your code more DRY.
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Join vs. sub-query
...tion level).
Nested sub-queries
SELECT moo, bar
FROM (
SELECT moo, CONCAT(roger, wilco) AS bar
FROM foo
GROUP BY moo
HAVING bar LIKE 'SpaceQ%'
) AS temp_foo
ORDER BY bar
You can nest sub-queries in multiple levels. This can help on huge datasets if you have to group o...
Remove duplicate values from JS array [duplicate]
... a = [],
LEN = 1000,
LOOPS = 1000;
while(LEN--)
a = a.concat(r);
var d = new Date();
for(var i = 0; i < LOOPS; i++)
uniq(a);
document.write('<br>uniq, ms/loop: ' + (new Date() - d)/LOOPS)
var d = new Date();
for(var i = 0; i < LOOPS; i++)
uniq_fast...
How do you sign a Certificate Signing Request with your Certification Authority?
...The extensions to add to the cert
email_in_dn = no # Don't concat the email in the DN
copy_extensions = copy # Required to copy SANs from CSR to cert
####################################################################
[ req ]
default_bits = 4096
default_keyfile = ...
Split (explode) pandas dataframe string entry to separate rows
...
How about something like this:
In [55]: pd.concat([Series(row['var2'], row['var1'].split(','))
for _, row in a.iterrows()]).reset_index()
Out[55]:
index 0
0 a 1
1 b 1
2 c 1
3 d 2
4 e 2
5 f 2
Then yo...