大约有 37,000 项符合查询结果（耗时：0.0318秒） [XML]
PDO mysql: How to know if insert was successful
...some action and re-throwing the exception for the any other error (no such table for example) which will be reported to a programmer.
While again - just to tell a user something like "Your insert was successful" no condition is ever needed.
...
Workflow for statistical analysis and report writing
...functions defined in func.R to perform the analysis and produce charts and tables.
The main motivation for this set up is for working with large data whereby you don't want to have to reload the data each time you make a change to a subsequent step. Also, keeping my code compartmentalized like this...
SQL Query Where Field DOES NOT Contain $x
... what is x.b? your letters are very very confusing. I recommend using table or field.
– Whitecat
Aug 24 '15 at 21:10
...
psql: FATAL: Peer authentication failed for user “dev”
...ostgresql? can't you just specify the authentication method in the pg_user table?
– fccoelho
May 9 '15 at 12:49
2
...
Django dynamic model fields
...s based on Entity Attribute Value data model, essentially, it uses several tables to store dynamic attributes of objects. Great parts about this solution is that it:
uses several pure and simple Django models to represent dynamic fields, which makes it simple to understand and database-agnostic;
...
Calculate difference between two datetimes in MySQL
..... etc. I want similar kind of functionality. For example there is one table say REQUESTS (id, message, timestamp). timestamp while storing will be NOW() . while i run a query, select * from requests, instead of displaying that value it should display id, message and how much time back request ...
How to delete all datastore in Google App Engine?
...n appengine) then datastore --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables).
You can do the same programmatically through the remote_api (but I never used it).
If you're talking about the development dat...
Add UIPickerView & a Button in Action sheet - How?
... to show the action sheet with a modal view controller containing a simple tableview.
There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse it between 5 or 6 different screens where I all users to select from a list of op...
SQL Server 2008: How to query all databases sizes?
...et.microsoft.com/SIZE-OF-ALL-DATABASES-IN-0337f6d5#content
DECLARE @spacetable table
(
database_name varchar(50) ,
total_size_data int,
space_util_data int,
space_data_left int,
percent_fill_data float,
total_size_data_log int,
space_util_log int,
space_log_left int,
percent_fill_log cha...
How to use greater than operator with date?
...ecords. What I did is to include time, see below example
SELECT * FROM my_table where start_date > '2011-01-01 01:01:01';
share
|
improve this answer
|
follow
...