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What is the difference between a stored procedure and a view?
...iece of SQL, I would define a view like:
CREATE VIEW vw_user_profile
AS
SELECT A.user_id, B.profile_description
FROM tbl_user A LEFT JOIN tbl_profile B ON A.user_id = b.user_id
GO
Thus, if I want to query profile_description by user_id in the future, all I have to do is:
SELECT profile_descr...
How to use count and group by at the same select statement
I have an sql select query that has a group by.
I want to count all the records after the group by statement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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sed error: “invalid reference \1 on `s' command's RHS”
...
Sorry. The edit raises the error: sed: -e expression #7, char 58: Invalid range end. @Denis' answer works.
– JJD
May 19 '13 at 18:29
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How to select unique records by SQL
When I perform "SELECT * FROM table" I got results like below:
8 Answers
8
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Split a collection into `n` parts with LINQ?
... group item by i++ % parts into part
select part.AsEnumerable();
return splits;
}
}
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Pycharm: run only part of my Python file
... easier way.
go to File -> Settings -> Keymap
Search for Execute Selection in Console and reassign it to a new shortcut, like Crl + Enter.
This is the same shortcut to the same action in Spyder and R-Studio.
sha...
Android Spinner : Avoid onItemSelected calls during initialization
...droid application with a Spinner and a TextView . I want to display the selected item from the Spinner's drop down list in the TextView. I implemented the Spinner in the onCreate method so when I'm running the program, it shows a value in the TextView (before selecting an item from the drop d...
How to select html nodes by ID with jquery when the id contains a dot?
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@Tomalak in comments:
since ID selectors must be preceded by a hash #, there should be no ambiguity here
“#id.class” is a valid selector that requires both an id and a separate class to match; it's valid and not always totally redundant.
The correct...
Spring Boot JPA - configuring auto reconnect
...1.3
spring.datasource.testOnBorrow=true
spring.datasource.validationQuery=SELECT 1
As djxak noted in the comment, 1.4+ defines specific namespaces for the four connections pools Spring Boot supports: tomcat, hikari, dbcp, dbcp2 (dbcp is deprecated as of 1.5). You need to check which connection po...
How to sleep for five seconds in a batch file/cmd [duplicate]
...specify the timeout in seconds and the /D parameter to specify the default selection and ignore then selected choice.
The one thing that might be an issue is if the user types one of the choice characters before the timeout period elapses. A partial work-around is to obfuscate the situation -- use ...