大约有 40,000 项符合查询结果（耗时：0.0328秒） [XML]
How to force table cell content to wrap?
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Use table-layout:fixed in the table and word-wrap:break-word in the td.
See this example:
<html>
<head>
<style>
table {border-collapse:collapse; table-layout:fixed; width:310px;}
table td {border:soli...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
...rmissions in the database to executing the needed SPs only, and not access tables directly.
you can also easily verify that the entire codebase only accesses the DB through SPs...
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...ent and SQLC_CALC_FOUND_ROWS was much faster than two queries. Now my main table is only 65k and two joins of a few hundreds, but the main query takes 0.18 seconds with or without SQLC_CALC_FOUND_ROWS but when I ran a second query with COUNT(id) it took 0.25 alone.
– transilvla...
Remove Primary Key in MySQL
I have the following table schema which maps user_customers to permissions on a live MySQL database:
12 Answers
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What's the Hi/Lo algorithm?
...re out the next identifier value knowing we use hilo in this particular DB table?
– Vlad Mihalcea
Feb 7 '17 at 1:46
My...
How to remove a lua table entry by its key?
I have a lua table that I use as a hashmap, ie with string keys :
1 Answer
1
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How do I retrieve my MySQL username and password?
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Stop the MySQL process.
Start the MySQL process with the --skip-grant-tables option.
Start the MySQL console client with the -u root option.
List all the users;
SELECT * FROM mysql.user;
Reset password;
UPDATE mysql.user SET Password=PASSWORD('[password]') WHERE User='[username]';
But DO NO...
Best way to synchronize local HTML5 DB (WebSQL Storage, SQLite) with a server (2 way sync) [closed]
...ize the lib (at each startup for example).
It will automatically create 2 tables (if they don't already exists, one to store all the new or modified elements (table new_elem) and one to store the date of the last sync (table sync_info). It will also create SQLite triggers in order to watch the INSE...
Which is more preferable to use: lambda functions or nested functions ('def')?
...with def. The difference is due to def creating a name entry in the locals table. The resulting function has the same execution speed.
Readability:
Lambda functions are somewhat less readable for most Python users, but also much more concise in some circumstances. Consider converting from using ...
Populate data table from data reader
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You can load a DataTable directly from a data reader using the Load() method that accepts an IDataReader.
var dataReader = cmd.ExecuteReader();
var dataTable = new DataTable();
dataTable.Load(dataReader);
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