大约有 5,887 项符合查询结果（耗时：0.0248秒） [XML]
Design patterns or best practices for shell scripts [closed]
... functions, like in this example code
# avoid double inclusion
if test "${Table__imported+defined}" == "defined"
then
return 0
fi
Table__imported=1
readonly Table__NoException=""
readonly Table__ParameterException="Table__ParameterException"
readonly Table__MySqlException="Table__MySqlExceptio...
How to drop unique in MySQL?
...you can use the following SQL Script to delete the index in MySQL:
alter table fuinfo drop index email;
share
|
improve this answer
|
follow
|
...
How to convert a table to a data frame
I have a table in R that has str() of this:
5 Answers
5
...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...LINUX字段的值是disabled，如果不是则改为disabled。
service iptables stop
chkconfig iptables off
6、创建用户和组
groupadd -g 5000 asmadmin
groupadd -g 5001 asmdba
groupadd -g 5002 asmoper
groupadd -g 6000 oinstall
groupadd -g 6001 dba
groupadd -g 6002 oper
...
Cannot delete or update a parent row: a foreign key constraint fails
...
As is, you must delete the row out of the advertisers table before you can delete the row in the jobs table that it references. This:
ALTER TABLE `advertisers`
ADD CONSTRAINT `advertisers_ibfk_1` FOREIGN KEY (`advertiser_id`)
REFERENCES `jobs` (`advertiser_id`);
......
Is there a way to loop through a table variable in TSQL without using a cursor?
Let's say I have the following simple table variable:
21 Answers
21
...
Add a column with a default value to an existing table in SQL Server
How can I add a column with a default value to an existing table in SQL Server 2000 / SQL Server 2005 ?
41 Answers
...
Does a foreign key automatically create an index?
I've been told that if I foreign key two tables, that SQL Server will create something akin to an index in the child table. I have a hard time believing this to be true, but can't find much out there related specifically to this.
...
1114 (HY000): The table is full
I'm trying to add a row to an InnoDB table with a simply query:
22 Answers
22
...
Illegal mix of collations MySQL Error
...BASE your_database_name CHARACTER SET utf8 COLLATE utf8_general_ci;
ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
MySQL sneaks swedish in there sometimes for no sensible reason.
share
...