Database Administrator

In Linux, Mysql table names are case-insensitive and mysql is case-insensitive.Scenario: Recently, the company switched the database from Oracle to Mysql. Since the table names in Oracle are case insensitive, the problem of table names not found in

Mysql Common commands (Baidu Library download, please forget) 1. Connect to MySQLFormat: mysql-h host address-u user name-p User Password1. Example 1: connect to MYSQL on the local machine.First, open the DOS window, enter the directory mysqlbin,

Mysql command line client command, mysqlclient1. Enter the password :******2. ues mysql; use Mysql3. show databases; displays the database4. use register; use the Database Name register5. show tables; displays the tables in the register database.6.

Kettle connection Cluster Environment configuration, kettle Cluster Environment Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held

Mysql client data garbled, mysql client garbled Garbled characters appear when inserting Chinese data into mysql: Mysql> select * from test;+ ------ + ----------- +| Id | name |+ ------ + ----------- +| 1 | why does one fail? || 2 | too many threads?

Install the lsscsi package on the rhel6.3 x86-64 system, rhel6.3lsscsi This article is the original article, reproduced please indicate the source: http://blog.csdn.net/msdnchina/article/details/43637889 Lsscsi packages are not installed by default.

Concerning the LUN queue depth (queue_depth) and aixqueue_depth In the AIX operating system # Lsattr-El hdisk10 PCM/friend/hitachifcp N/A True PR_key_value 0x1c4ce354c Reserve Key True Algorithm round_robin N/A False Clr_q no Device CLEARS its Queue

For MySql database, table operations, addition, deletion, modification, query, and other SQL statements, mysqlsql (1) how to copy and paste content in cmd? Reference: http://jingyan.baidu.com/article/93f9803fd3a4dde0e46f55f5.html (2) how to open

Garbled Characters During MySQL Data Migration If MySQL Data is transplanted from a lower version of mysql to a later version, it is prone to garbled characters when the transplanted data contains Chinese data. Many of them are migrated from

MySQL Database password function, mysqlpassword Execute the following statement in the MySQL database to generate a new encrypted string for the string. The user stores the password in the database. Select password ('A ') The generated string

PostgreSQL executes the overall process of Executing command-type SQL statements such as Drop Table, postgresqldrop The DROP command (Commands) Implementation: /* * Drop one or more objects. * * We don't currently handle all object types here.

[Redis] redis command Summary (2), redis command SummaryPublish/subscribe pub/sub Command Format Time Complexity Command description Return Value Publish channel message O (N) Sends the message to the specified

The automatic backup script for Oracle databases in Windows @ Echo off echo ============================================ ================= echo in Windows environment, the Oracle database's automatic backup script echo 1. use the current date to

2015 first blog, Oracle time period query, comparison of TO_DATE and TO_CHAR, to_dateto_charPreface:During time period query, when TO_DATE is used, including the start date, not the end date;When TO_CHAR is used, the start date or end date can be

Redis research-portal, redis Portal When LZ was working on FreeLink, the open-source call center project, the calculation and maintenance of Agent phone statistics used Redis knowledge, and simply learned Redis a little. The following describes the

Using datafile copy to rename a data file, datafilecopy Ideas: O use RMAN to copy data files O offline O switch file name. This step changes the file name corresponding to the data file in the control file. O recover data files O online data files

Batch export the shell script and informaticaobject of the ICA object #!/bin/bash # -----------------------------------------------------------------------# Script Name: inf_impobj.sh# Purpose: To batch export mappings or workflows to xml files #

SQL statement execution sequence and SQL statement SequenceUnlike other programming languages, SQL is most characteristic of code processing. In programming languages with large numbers, the code is processed in the encoding order, but in SQL, the

When should MongoDB be used? This article seriously mentions the difficulties encountered in using MongoDB and the reasons for eventually abandoning MongoDB. I spent a lot of time reading the review, but I have not carefully read the comments. If

Oracle dbms_random.value, dbms_random.value Dbms_random is a package that can generate random values or strings. There are two usage methods for value () in the package:If there is no parameter in the first type, a 38-bit precision value is