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How to delete from multiple tables in MySQL?
...ascading deletes are as much a part of data management as triggers, stored procedures or constraints and they're only dangerous if you don't know what you're doing. Still, I won't argue the point further, we'll just have to agree to disagree.
– paxdiablo
Jul 26...
Assign null to a SqlParameter
...meter within SQLCommand, unless a default value is specified within stored procedure (if you are using stored procedure). The best approach is to assign DBNull.Value for any missing parameter before query execution, and following foreach will do the job.
foreach (SqlParameter parameter in sqlCmd.Pa...
How to declare a variable in MySQL?
...ey can be used as local variables and the input parameters
inside a stored procedure:
DELIMITER //
CREATE PROCEDURE sp_test(var1 INT)
BEGIN
DECLARE start INT unsigned DEFAULT 1;
DECLARE finish INT unsigned DEFAULT 10;
SELECT var1, start, finish;
SELECT * FROM places WH...
Install gitk on Mac
... brew should NOT need sudo privileges. The brew installation procedure itself needs sudo, but it then opens permissions on /usr/local so that after that you wont need sudo. If you need sudo, either you're choosing that you want brew to only work with sudo (totally understandable decisi...
MySQL OPTIMIZE all tables?
...ace in a MySQL install. Is there a way (built-in command or common stored procedure) to run this optimization for every table in the database and/or server install, or is this something you'd have to script up yourself?
...
Calling Objective-C method from C++ member function?
...om .cpp or .m to .mm.
There are two minor downsides to this: clang cannot analyse C++ source code; some relatively weird C code does not compile under C++.
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How do I convert datetime to ISO 8601 in PHP
...:21:46');
echo $datetime->format(DateTime::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));
...
Replace duplicate spaces with a single space in T-SQL
...00 records of a table tends to be very slow, so you need to create it as a procedure and pass in a record and some jobs you may not have permission to create a band new procedure. Neil's uses per-existing functions because it uses <>, if you have a string like "release < now" then you'll ...
How do I get textual contents from BLOB in Oracle SQL
... l_offset
, l_buffer);
-- The DBMS_LOB.READ procedure dictates that its output be RAW.
-- This next procedure converts that RAW data to character data.
l_text_buffer := UTL_RAW.CAST_TO_VARCHAR2(l_buffer);
-- For the next iteration through the B...
OAuth secrets in mobile apps
...ers by an offset, rotate it - do any or all of these things. A cracker can analyse your byte code and find strings, but the obfuscation code might be hard to figure out.
It's not a foolproof solution, but a cheap one.
Depending on the value of the exploit, some genius crackers can go to greater l...