大约有 49,000 项符合查询结果（耗时：0.0267秒） [XML]
Get table column names in MySQL?
...
How about this:
SELECT @cCommand := GROUP_CONCAT( COLUMN_NAME ORDER BY column_name SEPARATOR ',\n')
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table';
SET @cCommand = CONCAT( 'SELECT ', @cCommand, ' from my_databas...
Split string on the first white space occurrence
...hance of not containing whitespace, it's safer to use .split and capturing groups like so:
str_1 = str.split(/\s(.+)/)[0]; //everything before the first space
str_2 = str.split(/\s(.+)/)[1]; //everything after the first space
...
Create a matrix of scatterplots (pairs() equivalent) in ggplot2
... You can't do pairs plots with faceting: you can only do y by x plots, and group them by factors. In other words, with faceting you have the same x and y on each sub-plot; with pairs, you have a different x on each column, and a different y on each row.
– naught101
...
Extract a substring according to a pattern
...
@PeterPan This captures and returns the group of characters appearing after the colon. If the strings to match are more complicated and you want to stay in base R this works well.
– Clark Fitzgerald
Nov 21 '16 at 20:14
...
Hosting ASP.NET in IIS7 gives Access is denied?
...perties of the folder), click on "Advanced" of the window "Select Users or Groups". Change the location to the computer name then click on "Find Now". You'll find those users in the list below.
share
|
...
How to get the mysql table columns data type?
...
Most answers are duplicates, it might be useful to group them. Basically two simple options have been proposed.
First option
The first option has 4 different aliases, some of which are quite short :
EXPLAIN db_name.table_name;
DESCRIBE db_name.table_name;
SHOW FIELDS FR...
Finding most changed files in Git
...-name-only | Where-Object { ![string]::IsNullOrEmpty($_) } | Sort-Object | Group-Object | Sort-Object -Property Count -Descending | Select-Object -Property Count, Name -First 10
share
|
improve th...
How can I open a Shell inside a Vim Window?
...l support, probably in vim 8.1. You can follow the progress here:
https://groups.google.com/forum/#!topic/vim_dev/Q9gUWGCeTXM
Once it's released, I do believe this is a more superior setup than using tmux.
share
|...
How to disable scrolling in UITableView table when the content fits on the screen
I have a few (grouped style) tables in my iphone app (only on part of the screen and added with Interface Builder though, not subclassed from UITableViewController ) that 80% of the time are small and will fit on the screen. When the table fits on the screen, I'd like to disable scrolling, to ma...
“query function not defined for Select2 undefined error”
...
Covered in this google group thread
The problem was because of the extra div that was being added by the select2. Select2 had added new div with class "select2-container form-select" to wrap the select created. So the next time i loaded the fun...