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How to get database structure in MySQL via query
...CHEMA.TABLES table. It contains metadata about all your tables.
Example:
SELECT * FROM `INFORMATION_SCHEMA`.`TABLES`
WHERE TABLE_NAME LIKE 'table1'
The advantage of this over other methods is that you can easily use queries like the one above as subqueries in your other queries.
...
Cannot open database “test” requested by the login. The login failed. Login failed for user 'xyz\ASP
..., rather than not set up as a login.
To test if it's set up as a login
SELECT SUSER_ID('xyz\ASPNET') -- (**not** SUSER_SID)
If NULL
CREATE LOGIN [xyz\ASPNET] FROM WINDOWS
If not NULL
USE test
GO
SELECT USER_ID('xyz\ASPNET')
If NULL
USE test
GO
CREATE USER [xyz\ASPNET] FROM LOGIN [xyz\AS...
autolayout - make height of view relative to half superview height
...lso need to setup bottom, left, and right constraints, like normal)
. Then select the constraint and navigate to the Attribute inspector:
Then you can adjust the multiplier. If you want it 50% of the super view leave it at 1, since it is aligned per the super's center. This is also a great way to...
GroupBy pandas DataFrame and select most common value
.... To clean the data I have to group by data frame by first two columns and select most common value of the third column for each combination.
...
How to map calculated properties with JPA and Hibernate
...e float finalPrice;
Or even complex queries on other tables:
@Formula("(select min(o.creation_date) from Orders o where o.customer_id = id)")
private Date firstOrderDate;
Where id is the id of the current entity.
The following blog post is worth the read: Hibernate Derived Properties - Perform...
How to return an array from JNI to Java?
... (JNIEnv *env, jobject jobj){
jobjectArray ret;
int i;
char *message[5]= {"first",
"second",
"third",
"fourth",
"fifth"};
ret= (jobjectArray)env->NewObjectArray(5,
...
Why does the 260 character path length limit exist in Windows?
...raphs), the maximum length for a path is MAX_PATH, which is defined as 260 characters. A local path is structured in the following order: drive letter, colon, backslash, name components separated by backslashes, and a terminating null character. For example, the maximum path on drive D is "D:\some 2...
Correct format specifier to print pointer or address?
...to void. The value of the pointer is
converted to a sequence of printing characters, in an implementation-defined
manner.
(In C11 — ISO/IEC 9899:2011 — the information is in §7.21.6.1 ¶8.)
On some platforms, that will include a leading 0x and on others it won't, and the letters could be...
Can a unit test project load the target application's app.config file?
...08 I added the app.config file to the test project as an existing item and selected copy as link in order to make sure it's not duplicated. That way I only have one copy in my solution. With several test projects it comes in really handy!
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Keyboard shortcut to paste clipboard content into command prompt window (Win XP) [closed]
...
Just to explain selecting also: ALT+SPACE+E+K <-- for copy . and navigate up , down , left , right with arrows Shift + right arrow <-- for selecting the text ALT+SPACE+E+P <-- for paste.
– Yordan Georgiev
...