db2 sql commands

!!) DROP DATABASE Drop database database_name DROP INDEX Drop index table_name.index_name (SQL Server)Drop index index_name ON table_name (MS Access)Drop index index_name (DB2/Oracle)Alter table table_nameDrop index index_name (MySQL) DROP TABLE Drop table table_name GROUP SELECT column_name, aggregate_function (column_name)FROM table_nameWHE

Data | database How to use SQL Common commands:(1) Data record filtering:Sql= "SELECT * from data table where field name = field value order BY field name [desc]"Sql= "SELECT * from data table where field name like '% field value ' Order by field name [desc]"Sql= "SELECT top * from data table where field name order by

Table Sales.orderdetails Order Details Form Sales.orders Order Form Sales.shippers Freight company Table SQL Server Some basic commands: Query Database exists: If db_id ("TestDB") is not null; Check if the table exists: If object_id ("TextDB", "U") is not null, where U represents the user table To create a database: Create

SQL commands-Comparison between Chinese and English SQL commands-Comparison between Chinese and English SQL commands-Comparison between Chinese and English -- Sentence skill -- Data Operations SELECT -- retrieve data rows and col

SQL Server by default to have so many "12051113280101053509" first converted to a number, and then to match 62010388000012. (First this involves an efficiency problem, converting so many msgid into numbers, and then matching your numbers, it will be a great waste of it) of course, this time SQL Server can not turn, because "12051113280101053509" for the number is too big, out of range , so you see

How to view the usage of some commands in SQL * plus Sometimes I forget the usage of some commands when using SQL * plus. In fact, we don't have to look up anything. We just need to check it in SQL * plus, Use help |? Parameter For example, in

Label:To import *.sql scripts directly in MySQL Qurey Brower, is the command to execute SQL files in MySQL without executing multiple SQL commands at once:Mysql> source D:/myprogram/database/db.sql;Also attached to MySQL common commands:A) connect to MySQL:Format: mysql-h host address-u user name-P user Password1. Exam

Basic SQL * Plus reports and commands 1. remark indicates the behavior comment 2. ttitle: Set the top title of the report www.2cto.com 3. btitle: Set the title at the bottom of the Report. 4. spool imports the on-screen reports to a file. save the SQL statement used to save the buffer to a file: save sqlfile. sqlsave sqlfile. replace

that cannot be The basic thing, C # has a benefit, is that you can see the source code, you can also ildasm it ... Basically you can let it come to you naked, but SQL Server is a bit special, it is not a programming language, you certainly do not learn by decompile, then it is a deeper layer of things can only be the underlying data page. 。 So this is to learn the basic skills of SQL Server, pull a bit mo

Label: SQL scripts are SQL statements that contain one or more SQL commands, and we can put these SQL scripts in a text file (which we call "SQL script files") and execute the SQL scrip

Mysql applications often use commands such as data backup, permission management, mysql stop and start, and some common database operation commands. I will sort them out below. Remote Access Mysql-h localhost-uroot-p Change Password Mysqladmin-uroot-proot password admin If the original password is empty Mysqladmin-uroot password admin Displays the version number, status, and process information. Mysqladmin

Basic Introduction to Oracle and common SQL * PLUS commands Run Database Configuration Assistant as an administrator to create a Database instance. To use Oracle, you must first start the Oracle service, find the service in the task manager, and open the services and listener services related to OracleService. If there is no listener service, you must manually create a listener service. Oracle Installatio

Ms SQL Server provides many database repair commands that can be attempted when the database challenges or some cannot complete the read. 1. After DBCC checkdb restarts the server and does not perform any operations, run the following SQL statement in the SQL query analyzer to fix Database Consistency errors and alloca

line. SQL> l 1 select id, name 2 from t1 3 where 4 id 5 * and id> 80 SQL> 4 -- first change the fourth row of the current behavior 4 * id SQL> I -- this is a demo! -- Input + text (text to be inserted) SQL> l 1 select id, name 2 from t1 3 where 4 id 5 -- this is a demo! 6 * and id> 8

The Selectquerybuilder class allows you to create complex SQL statements and commands in your code. It also helps to avoid SQL injection attacks. Introduced Admit, and we've all done it, and think the following way is the best and the only way. Is that we build a lot of strings that contain all the WHERE clauses and then commit them to the database to execute i

Common SQL Privilege Escalation commands. You can consider setting SQL Server service operation permissions to common users to prevent the following privilege escalation. Common SQL Privilege Escalation commands. You can consider setting

It is believed that many comrades who use EF already know how to run SQL commands in EF. I would like to summarize here, I hope you learn EF help! In the first version of EF (. NET3.5SP1), we can only convert the objectcontext.connection to EntityConnection, and then Entityconnection.storeconnection converted to SqlConnection. With this SqlConnection, we will be able to run the

view system variables for a character set:Show variables like '%character% ';Note: Set names GBK; commands only play a temporary role.2.3 Modifying Table records:Update table name Set field = value, ...;Update Student set stuname= ' Little East ' where stunum = ' 0001 '3. Delete Table recordsDelete from table name where conditionDelete from Student where stunum = ' 0001 '4. Table query:Select field List from table name [WHERE Condition] [order by fie

After running SQL statements in Linux sqlplus, you can use the up and down keys to find out the historical commands. After running SQL statements in Linux sqlplus, you can use the up and down keys to find out the historical commands. After running SQL statements in Linu

From: http://blog.csdn.net/nicewuranran/article/details/51793760 No-sql's Redis IntroductionRedis is a memory-based Key-value high-performance storage system, similar to memcached, but Redis supports a rich data structure type, and it also supports the persistence of persisted to disk.Redis is a data structure server. It is open-source, networked, in-memory, and stores keys with optional durability. The development of Redis has been sponsored by Redis Labs since June2015. Before that, it was spo