大约有 6,100 项符合查询结果（耗时：0.0247秒） [XML]
MySQL Orderby a number, Nulls last
...sign (-) before the column name and switch the ASC to DESC:
SELECT * FROM tablename WHERE visible=1 ORDER BY -position DESC, id DESC
It is essentially the inverse of position DESC placing the NULL values last but otherwise the same as position ASC.
A good reference is here http://troels.arvin.dk...
How do you run a single query through mysql from the command line?
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mysql -u <user> -p -e "select * from schema.table"
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When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...rs encoded by encodeURIComponent but not by encodeURI:
I generated this table easily with console.table in Google Chrome with this code:
var arr = [];
for(var i=0;i<256;i++) {
var char=String.fromCharCode(i);
if(encodeURI(char)!==encodeURIComponent(char)) {
arr.push({
c...
Hibernate dialect for Oracle Database 11g?
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Unfortunately does not help for "ORA-01754: a table may contain only one column of type LONG".
– Jan Goyvaerts
Mar 6 '13 at 10:52
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How to do paging in AngularJS?
...y current use and has a thorough test spec to accompany it.
View
<!-- table here -->
<pagination
ng-model="currentPage"
total-items="todos.length"
max-size="maxSize"
boundary-links="true">
</pagination>
<!-- items/page select here if you like -->
Controller
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How can I view live MySQL queries?
...ry query run results in the query being inserted into some sort of history table, and then create a separate page to access this information.
Do be aware that this will probably considerably slow down everything on the server though, with adding an extra INSERT on top of every single query.
Edit...
MySQL - force not to use cache for testing speed of query
...your query.
(MySQL 5.6 users click HERE )
eg.
SELECT SQL_NO_CACHE * FROM TABLE
This will stop MySQL caching the results, however be aware that other OS and disk caches may also impact performance. These are harder to get around.
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Serializing object that contains cyclic object value
... goes.
One feature that's not as well-known as JSON.stringify() is console.table(). Simply call console.table(whatever);, and it will log the variable in the console in tabular format, making it rather quite easy and convenient to peruse the variable's contents.
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Split value from one field to two
I've got a table field membername which contains both the last name and the first name of users. Is it possible to split those into 2 fields memberfirst , memberlast ?
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Rails migrations: self.up and self.down versus change
... you rollback? Of course it's remove_column. What is the inverse of create_table? It's drop_table. So in these cases rails know how to rollback and define a down method is superfluous (you can see in the documentation the methods currently supported from the change method).
But pay attention becaus...