Clear, delete, and modify mysql tables.

Clear, delete, and modify mysql tables. Individual Original: http://www.phpthinking.com/archives/365 I. Clear mysql table data Delete from table name;Truncate table name;The delete statement without the where parameter can delete all content in the

MYSQL Study Notes 3: Date and Time Functions, mysql Study Notes

MYSQL Study Notes 3: Date and Time Functions, mysql Study Notes MYSQL study Note 3: Date and Time Functions 1. Get the function of the current date and the function of the current time /* Get the current date function and get the current time

SQL Server database does not have three solutions for valid owners.

SQL Server database does not have three solutions for valid owners. Problem: During the development process, the operating system had a problem and decided to reinstall the system. However, the SQL Server database file is not separated and the

ORACLE parameter file introduction, oracle parameter Introduction

ORACLE parameter file introduction, oracle parameter Introduction After the ORACLE database is started, you can use the select * from v $ parameter statement to view all the parameters used by the oracle database.   Oracle parameter files are

MySQL advanced technology-transaction processing and lock, mysql Transaction Processing

MySQL advanced technology-transaction processing and lock, mysql Transaction ProcessingMySQL advanced technology-transaction processing and lockHow does mysql lock a row of data with transactions and locks so that two users are not allowed to read a

Use navicat to export the data table structure and insert statement, navicatinsert

Use navicat to export the data table structure and insert statement, navicatinsert After using navicat for a while, it was found that navicat is indeed very convenient and supports multiple databases. I used to think that his SQL files are

MySQL advanced technology-storage engine, mysql storage engine

MySQL advanced technology-storage engine, mysql storage engine The MySQL function is divided into two parts. The outer part is mainly used to connect to the client and investigate SQL statements beforehand. The inner part is the so-called storage

Basic MySQL-basic database operations and basic mysql operations

Basic MySQL-basic database operations and basic mysql operations 1. Delete the database drop database name; Mysql> drop database test; Delete database mode 2. create DATABASE name; Mysql> create database test; In Windows and Linux, database names

SQLPLUS feedback settings, sqlplusfeedback

SQLPLUS feedback settings, sqlplusfeedback When SQL plus is used to execute an SQL statement, a prompt such as "XX rows have been returned" may be returned for the result returned by a SELECT statement, but this prompt is not found when a database

Insert data to the database (ORACLE) through excel, exceloracle

Insert data to the database (ORACLE) through excel, exceloracle We all know that PL/SQL can copy data to excel, and we can also insert data to the database through excel. The following is a simple example and example. First, create a table named

Implement data verification and check in kettle, and kettle implement data verification

Implement data verification and check in kettle, and kettle implement data verification Implement data verification and check in kettle In ETL projects, input data usually cannot be consistent. There are some steps in kettle for data verification

Oracle control file multiplexing and oracle control multiplexing

Oracle control file multiplexing and oracle control multiplexing 1. Control File multiplexing 1. show parameter control-- View Control File InformationShow parameter spfile-- Check whether spfile exists.Create pfile from spfile;-- Generate

Database Table field data segmentation

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Database Table field data segmentation Sometimes, to reduce the number of stored records, multiple records may be merged into one display. In this case, the other fields recorded in the table are the same, and only one field is changed. For example,

Introduction to Oracle instance recovery and flashback, oracleflashback

Introduction to Oracle instance recovery and flashback, oracleflashback Instance recovery phase:1. data files are not synchronized 2. Roll Forward (redo)3. submitted and unsubmitted data in the file 4. Open the database 5. Roll Back (Restore undo) 6.

Linux host monitoring information display, linux host monitoring

Linux host monitoring information display, linux host monitoringStorage information display:Overall space and free space display[Root @ ora11g64 ~] # Df-hFile System capacity used available % mount point/Dev/mapper/VolGroup00-LogVol0037G 15G 20G 43%/

DYNAMICRESOLUTION | NODYNAMICRESOLUTION, dynamicresolution

DYNAMICRESOLUTION | NODYNAMICRESOLUTION, dynamicresolution Sometimes it is slow to start the OGG process. It may be because too many tables need to be synchronized. Before enabling the process, OGG creates a record for the table to be synchronized

Common Methods for viewing Oracle execution plans-Series 2: oracle execution plans

Common Methods for viewing Oracle execution plans-Series 2: oracle execution plans Continued article: http://blog.csdn.net/bisal/article/details/38919181 3. AUTOTRACE Switch Turn on AUTOTRACE in SQLPLUS to get the SQL Execution Plan. The prompt

Encrypting Goldengate Password, goldengate

Encrypting Goldengate Password, goldengateSpecify the user password in the OGG parameter file. In this case, we need to encrypt the password: [oracle @ ogg1 ogg] $ ls-l keygen-rwxr-x-1 oracle oinstall 327034 Apr 23 2012 keygen [oracle @ ogg1 ogg] $.

Oracle learning-literacy: oracle literacy

Oracle learning-literacy: oracle literacy Preface   I have been dealing with Oracle databases over the past few days. Since I have not learned much about Oracle before, I just used Oracle as a data source. I don't know much about it. For example,

Docker init started, dockerinit

Docker init started, dockerinit # Yum install WgetHttp://fedora.mirror.nexicom.net/epel/6/x86_64/epel-release-6-8.noarch.rpm Yum-y install epel-release-6-8.noarch.rpm Yum-y install docker-io # Wget install Yum install-y libcgroup lxc Service

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