I need to execute in python a SQL query that adds a new column, in sqlite3. The problem is that sometimes it already exists. So previous to executing the query I need to check if th开发者_JAVA百科e
SELECT* FROMemployees e WHERENOT EXISTS ( SELECTname FROMeotm_dyn d WHEREd.employeeID = e.id ) And SELECT * FROM employees a LEFT JOIN eotm_dyn b on (a.joinfield=b.joinfield) WHERE b.name IS NULL
Hey all... When I run the code below, the if(property_exists(get_class($puzzleCharacters_encrypted), $solutionCharacter) keeps evaluating to false, but the echo statements preceding that are showing t
How do you check if an include / require_once exists before you call it, I tried putting it in an error block, but PHP didn\'t like that.
I have a reference to a DOM 开发者_Go百科element, and a jQuery object which is the result of a selector, and I want to check if that specific DOM element is in that jQuery object. Short of looping thr
How do I check an external file for a class? I am trying to setup a install feature for my modules开发者_Python百科, so I am trying to get it to load a list of directories and then check if the modul
Basically, I want to upload about 10,000 family photos that have been organized into folders according to names of the people involved. What I\'m 开发者_开发问答looking for is php driven software that
Ho开发者_如何学运维w to write if not exists statement in sql server 2005 for the following condition
I need to determine if a Perl hash has a given key, but that key will be mapped to an undef value.Specifically, the motivation for this is seeing if boolean flags while using getopt() with a hash refe
I need to check if a webpage exists if it does whether a certain string exists anywhere on the page. Preferably I\'d like to do th开发者_StackOverflow中文版is without a webbrowser control, so that ima
加载中,请稍侯......