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How can I add comments in MySQL?
...ified with the COMMENT option. The comment is displayed by the SHOW CREATE TABLE and SHOW FULL COLUMNS statements. This option is operational as of MySQL 4.1. (It is allowed but ignored in earlier versions.)"
As an example
--
-- Table structure for table 'accesslog'
--
CREATE TABLE accesslog (
ai...
I want to use CASE statement to update some records in sql server 2005
...rk for the purpose but the else condition scan through every record in the table. Is there any way I can leave the unaffected rows as they are?
...
phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...onnect(UC_DBHOST, UC_DBUSER, UC_DBPW, '', UC_DBCHARSET, UC_DBCONNECT, UC_DBTABLEPRE);
替换为：
代码示例:
$this->db->connect(UC_DBHOST, UC_DBUSER, UC_DBPW, UC_DBNAME, UC_DBCHARSET, UC_DBCONNECT, UC_DBTABLEPRE);
2、为什么不使用官方自带的 UCenter 客户端？
答：官方自...
sqlite 命令行创建一个空库 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...库的优势，比touch创建一个空文件好。$sqlite3 foo db "create table t(f int); drop table t;"可以通过以下方 SQLite创建一个空白的数据库，具有被识别为有效的SQLite数据库的优势，比touch创建一个空文件好。
$sqlite3 foo.db "create table t(f int); ...
How do you list all triggers in a MySQL database?
...ll triggers is:
show triggers;
or you can access the INFORMATION_SCHEMA table directly by:
select trigger_schema, trigger_name, action_statement
from information_schema.triggers
You can do this from version 5.0.10 onwards.
More information about the TRIGGERS table is here.
...
Undo scaffolding in Rails
...e db:rollback before you destroy your scaffold. This will destroy/drop the table if there is no other migration except the scaffold's migration before it.
– Yakob Ubaidi
May 8 '14 at 11:06
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sqlite database default time value 'now'
Is it possible in a sqlite database to craete a table that has a timestamp column that default to DATETIME('now') ?
7 Ans...
Automatic TOC in github-flavoured-markdown
Is it possible to generate an automatic Table of Contents using Github Flavoured Markdown ?
17 Answers
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Insert/Update Many to Many Entity Framework . How do I do it?
...a Student object that has a collection of Classes. Since your StudentClass table only contains the Ids and no extra information, EF does not generate an entity for the joining table. That is the correct behaviour and that's what you expect.
Now, when doing inserts or updates, try to think in terms ...
MySQL LIKE IN()?
...
Over 1 million rows in my table. REGEX arround 0.0009 and LIKE arround 0.0005. If more then 5 REGEX, arround 0.0012...
– David Bélanger
Nov 26 '11 at 5:24
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