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LISTAGG in Oracle to return distinct values
...t useful:
with test_data as
(
select 'A' as col1, 'T_a1' as col2, '123' as col3 from dual
union select 'A', 'T_a1', '456' from dual
union select 'A', 'T_a1', '789' from dual
union select 'A', 'T_a2', '123' from dual
union select 'A', 'T_a2', '456' from dual
union select 'A', 'T_a2', '111' fr...
How to hide the “back” button in UINavigationController?
...nswered Dec 11 '13 at 8:02
mattv123mattv123
89988 silver badges1313 bronze badges
...
Turn off autosuggest for EditText?
...
123
I had the same question but I still wanted to set this option in my XML file so I did a little...
Find rows that have the same value on a column in MySQL
...* FROM member WHERE email = (Select email From member Where login_id = john123@hotmail.com)
This will return all records that have john123@hotmail.com as a login_id value.
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Find MongoDB records where array field is not empty
...d only happen if pictures is a sub-doc, not an array. e.g. pictures: {'2': 123}
– JohnnyHK
Aug 24 '15 at 19:46
5
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How to remove all characters after a specific character in python?
..., if you want remove every thing from the character, do this:
mystring = "123⋯567"
mystring[ 0 : mystring.index("⋯")]
>> '123'
If you want to keep the character, add 1 to the character position.
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Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...cked__)) my_struct {
char c;
int i;
};
struct my_struct a = {'a', 123};
struct my_struct *b = &a;
int c = a.i;
int d = b->i;
int *e __attribute__((aligned(1))) = &a.i;
int *f = &a.i;
Here, the type of a is a packed struct (as defined above). Similarly, b is a pointer to a p...
How to convert a byte array to a hex string in Java?
...is the function I currently use:
private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
public static String bytesToHex(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
for (int j = 0; j < bytes.length; j++) {
int v = bytes[j] & 0xFF;
he...
Install a Windows service using a Windows command prompt?
...
If the directory's name has a space like c:\program files\abc 123, then you must use double quotes around the path.
installutil.exe "c:\program files\abc 123\myservice.exe"
It makes things much easier if you set up a bat file like following,
e.g. To install a service, create a "my...
Find and extract a number from a string
...
go through the string and use Char.IsDigit
string a = "str123";
string b = string.Empty;
int val;
for (int i=0; i< a.Length; i++)
{
if (Char.IsDigit(a[i]))
b += a[i];
}
if (b.Length>0)
val = int.Parse(b);
...