大约有 30,000 项符合查询结果（耗时：0.0567秒） [XML]
How do you use variables in a simple PostgreSQL script?
... WHERE Name = v_List;
-- ...
END $$;
Also you can get the last insert id:
DO $$
DECLARE lastid bigint;
BEGIN
INSERT INTO test (name) VALUES ('Test Name')
RETURNING id INTO lastid;
SELECT * FROM test WHERE id = lastid;
END $$;
...
What does iterator->second mean?
...ough two members: first and second. So if you have a std::pair<X, Y> called p, p.first is an X object and p.second is a Y object.
So now you know that dereferencing a std::map iterator gives you a std::pair, you can then access its elements with first and second. For example, (*it).first will...
Customizing the template within a Directive
...gt;' +
'<label class="control-label" for="' + attrs.formId + '">' + attrs.label + '</label>' +
'<div class="controls">' +
'<input type="' + type + '" class="input-xlarge" id="' + attrs.formId + '" name="' + attrs.formId + '...
Select rows which are not present in other table
...pty in Postgres
FROM ip_location
WHERE ip = l.ip
);
Also consider:
What is easier to read in EXISTS subqueries?
LEFT JOIN / IS NULL
Sometimes this is fastest. Often shortest. Often results in the same query plan as NOT EXISTS.
SELECT l.ip
FROM login_log l
LEFT JOIN ip_locat...
Can you use an alias in the WHERE clause in mysql?
... your expression, e.g.
WHERE (sum(reviews.rev_rating)/count(reviews.rev_id))>5
BUT! Not all expressions will be allowed - using an aggregating function like SUM will not work, in which case you'll need to use a HAVING clause.
From the MySQL Manual:
It is not allowable to refer to a
co...
Skip a submodule during a Maven build
... </modules>
...
<profiles>
<profile>
<id>ci</id>
<modules>
<module>module1</module>
<module>module2</module>
...
<module>module-integration-test</module>
...
Override browser form-filling and input highlighting with HTML/CSS
...ut:-webkit-autofill {
background-color: #FAFFBD !important;
}
1) as #id-styles are even more important than .class styles, the following may work:
#inputId:-webkit-autofill {
background-color: white !important;
}
2) if that won't work, you can try to set the style via javascript program...
Importing a CSV file into a sqlite3 database table using Python
...olumn headers in the csv file. And close the connection to the database by calling con.close() at the end.
– Jonas
Aug 8 '16 at 21:31
1
...
git add all except ignoring files in .gitignore file
...ted to the repo.
From the Github docs:
You can use this technique for locally-generated files that you don't expect other users to generate, such as files created by your editor.
Use your favorite text editor to open the file called .git/info/exclude within the root of your Git repository. An...
Can we append to a {% block %} rather than overwrite?
...u'd also like it to add some javascript in a block at the end of the page: calling block.super in the included template will crash.
Cf. Django issues #7324, #12008, #13399 and the related update to the documentation. Cf. include tag note:
The include tag should be considered as an implementation of...