大约有 15,630 项符合查询结果（耗时：0.0343秒） [XML]
How to assign an exec result to a sql variable?
...
I always use the return value to pass back error status. If you need to pass back one value I'd use an output parameter.
sample stored procedure, with an OUTPUT parameter:
CREATE PROCEDURE YourStoredProcedure
(
@Param1 int
,@Param2 varchar(5)
,@Par...
How do I query using fields inside the new PostgreSQL JSON datatype?
...on as described in other posts. Also note the -> operator will throw an error if you try to access a property which does not exist (i.e. if you have staggered JSON): ERROR: column "jsonPropertyYouWant" does not exist
– The Red Pea
Nov 25 '18 at 1:13
...
Node.js: How to send headers with form data using request module?
...
throw new Error('undefined is not a valid uri or options object.') ^ Error: undefined is not a valid uri or options object. at request (C:\Users\pjt\node_modules\request\index.js:44:11) at Request._callback (C:\Users\pjt\route...
Can I have multiple primary keys in a single table?
...s auto-incremented. This will work only in MyISAM. InnoDB will generate an error "ERROR 1075 (42000): Incorrect table definition; there can be only one auto column and it must be defined as a key".
DROP TABLE IF EXISTS `test`.`animals`;
CREATE TABLE `test`.`animals` (
`grp` char(30) NOT NULL,
...
How to add to an existing hash in Ruby
...plement this with the following: x['key'] = "value" however I am receiving errors. I should mention I am working with strings.
– Tom
Jul 28 '11 at 18:49
...
Entity Framework is Too Slow. What are my options? [closed]
...ved a LOT of time in other simpler cases, with less code and less room for error and the queries are compiler verified and match the database. Less code is easier maintenance and less room for errors.
– JulianR
Dec 29 '11 at 18:11
...
What is the difference between required and ng-required?
... Its worth mentioning that ng-required displays a default tooltip style error message saying 'this field is required', which is not always desired. I'm looking for a way to turn it off
– Adam Spence
Mar 13 '14 at 12:12
...
What are major differences between C# and Java?
...ard to see how being forced to write an explicit try/finally block is less error-prone than a using statement, IMO. Most of C#'s "extra" features compared with Java mean that you can get away with writing less code, and that that code can be more readable.
– Jon Skeet
...
Add column with number of days between dates in DataFrame pandas
...
Nde - how exactly did it not work? Error or wrong values? Did you convert both A and B columns to datetime successfully?
– Ricky McMaster
Sep 24 '18 at 6:56
...
Correct idiom for managing multiple chained resources in try-with-resources block?
...sort of obscure knowledge.
Also there's the "destruction". If there is an error condition, then you probably don't want to be flushing rubbish to a file that needs deleting (code for that not shown). Although, of course, deleting the file is also another interesting operation to do as error handlin...