大约有 7,000 项符合查询结果（耗时：0.0268秒） [XML]
Ordering by specific field value first
...
There's also the MySQL FIELD function.
If you want complete sorting for all possible values:
SELECT id, name, priority
FROM mytable
ORDER BY FIELD(name, "core", "board", "other")
If you only care that "core" is first and the other values ...
MySQL remove all whitespaces from the entire column
...UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\n', '')
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace
To remove first and last space(s) of column :
UPDATE `table` SET `col_name` = TRIM(`col_name`)
http://dev.mysql.com/doc/refman/5.0/en/string-functions.htm...
How to get current date & time in MySQL?
...ment:
Core i3 Windows Laptop with 4GB RAM, and I did the above example on MySQL Workbench 6.2 (Version 6.2.5.0 Build 397 64 Bits)
share
|
improve this answer
|
follow
...
How to change collation of database, table, column?
...ame != 'utf8_general_ci' AND table_schema not in ('information_schema','mysql', 'performance_schema','sys');
– William Entriken
Dec 12 '19 at 19:56
...
Which is faster: multiple single INSERTs or one multiple-row INSERT?
I am trying to optimize one part of my code that inserts data into MySQL. Should I chain INSERTs to make one huge multiple-row INSERT or are multiple separate INSERTs faster?
...
View's SELECT contains a subquery in the FROM clause
...
As per documentation:
MySQL Docs
The SELECT statement cannot contain a subquery in the FROM clause.
Your workaround would be to create a view for each of your subqueries.
Then access those views from within your view view_credit_status
...
Remove ActiveRecord in Rails 3
... line that loads the module for your database. This could be the line gem "mysql" for example.
share
|
improve this answer
|
follow
|
...
How can I see the specific value of the sql_mode?
There are some sql_mode values in MySQL:
2 Answers
2
...
How Scalable is SQLite? [closed]
I recently read this Question about SQLite vs MySQL and the answer pointed out that SQLite doesn't scale well and the official website sort-of confirms this , however.
...
Foreign key constraints: When to use ON UPDATE and ON DELETE
I'm designing my database schema using MySQL Workbench, which is pretty cool because you can do diagrams and it converts them :P
...