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Efficiently convert rows to columns in sql server
...<| SQL_Code |>] = '' '' '
+ 'UNION ALL '
+ 'SELECT ''----------------------------------------------------------------------------------------------------'' '
+ 'UNION ALL '
...
ServiceStack vs ASP.Net Web API [closed]
I want to write a new REST style API and have looked at ServiceStack and quite like it. However, I have seen that Microsoft has released the ASP.Net Web API project as part of the new MVC 4 beta. Has anyone looked at the new Web API project? Can you give any pros/cons of each system?
...
Mixing Angular and ASP.NET MVC/Web api?
...needs (JS, CSS, and HTML views) and runs on its own, communicating back to services to send or retrieve data. So, a server-side technology is still necessary for providing those services (as well as other means such as authentication and the likes), but the rendering parts are largely irrelevant and...
What does |= (ior) do in Python?
...ace+ operation between pairs of objects. In particular, between:
sets: a union operation
dicts: an update operation
counters: a union (of multisets) operation
numbers: a bitwise OR, binary operation
In most cases, it is related to the | operator. See examples below.
Sets
For example, the union o...
Get record counts for all tables in MySQL database
...t_row_count FROM `',
table_schema,
'`.`',
table_name,
'` UNION '
)
FROM INFORMATION_SCHEMA.TABLES
WHERE table_schema = '**my_schema**';
It produces output like this:
SELECT "func" AS table_name, COUNT(*) AS exact_row_count FROM my_schema.func UNION
SEL...
What are the mechanics of short string optimization in libc++?
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...
Check if a class has a member function of a given signature
...her down
Check for member x in a given class. Could be var, func, class, union, or enum:
CREATE_MEMBER_CHECK(x);
bool has_x = has_member_x<class_to_check_for_x>::value;
Check for member function void x():
//Func signature MUST have T as template variable here... simpler this way :\
CREAT...
Simple way to transpose columns and rows in SQL?
... if you do not have access to those functions this can be replicated using UNION ALL to UNPIVOT and then an aggregate function with a CASE statement to PIVOT:
Create Table:
CREATE TABLE yourTable([color] varchar(5), [Paul] int, [John] int, [Tim] int, [Eric] int);
INSERT INTO yourTable
([color...
How do you use the “WITH” clause in MySQL?
...to write queries like this:
WITH RECURSIVE my_cte AS
(
SELECT 1 AS n
UNION ALL
SELECT 1+n FROM my_cte WHERE n<10
)
SELECT * FROM my_cte;
+------+
| n |
+------+
| 1 |
| 2 |
| 3 |
| 4 |
| 5 |
| 6 |
| 7 |
| 8 |
| 9 |
| 10 |
+------+
10 rows in set (0,00 sec)
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What's the difference between array_merge and array + array?
...
The difference is:
The + operator takes the union of the two arrays, whereas the array_merge function takes the union BUT the duplicate keys are overwritten.
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