wgb homes

Query all sequences in Oracle: Note: 1. You must log on as an administrator; 2. sequence_owner must be in upper case, regardless of whether your user name is in upper case. Only uppercase letters can be recognized. -- View All sequences of current users Select SEQUENCE_OWNER, SEQUENCE_NAME from dba_sequences where sequence_owner = 'username '; -- Query the total number of user Sequences Select count (*) from dba_sequences where sequence_owner = 'username '; -- Example: Select SEQU

Note: 1. You must log on as an administrator; 2. the sequence_owner must be in upper case, regardless of whether your user name is in upper case. Only uppercase letters can be recognized. -- View All sequences of the current user select sequence_owner, sequence_name from dba_sequences where sequence_owner = 'username'; -- query the total number of sequences of the current user select count (*) from dba_sequences where sequence_owner = 'username'; -- Example '; SQL> select sequence_owner, sequenc

t_user (name) values ('wgb'); Query OK, 1 row affected (0.00 sec) mysql> select * from t_user; + ---- + ---------- + | id | name | + ---- + ---------- + | 1 | larrywen | 2 | justdb | 3 | wgb | + ---- + ---------- + 3 rows in set (0.00 sec) mysql> create table t_log (id int (11) primary key auto_increment, content varchar (20), t_user_id int (11), constraintfk_larry_t_log_usr_id foreign key (t_user_id) refe

Environment: MySQL Sever 5.1 + MySQL command line tool Issue: Create a user, authorize by using the command line 1. Create User: Command: CREATE USER username identified by ' password '; Description: username--You will create the username, password--the user's login password, the password can be empty, if it is empty then the user can not need a password login server. Example: CREATE USER WGB identified by '

Tags: view art RAC SQL Name Sample Pack ACK considerationsPrecautions : Must be logged in as Administrator; Sequence_owner must be uppercase, regardless of whether your user name is uppercase or not. Only uppercase can be recognized. --查看当前用户的所有序列 select SEQUENCE_OWNER,SEQUENCE_NAME from dba_sequences where sequence_owner=‘用户名‘; --查询当前用户的序列总数 select count(*) from dba_sequences where sequence_owner=‘用户名‘; --示例： select SEQUENCE_OWNER,SEQUENCE_NAME from dba_sequences

Environment Oracle 11.2.0 + SQL Plus Problem Write a function as required: add 200 of the employees whose salaries are lower than the average wage in the scott. emp table, and return the total number of employees who have changed their salaries. An updated operation in PL/SQL, executing this function reports the following error: ORA-16551: unable to perform DML operations in queries. Solution Add PRAGMA AUTONOMOUS_TRANSACTION when declaring the function, and COMMIT after executing DML. Operation

Environment RedHat Linux 9 + VWWare 7.1.2 + Putty 0.62 Problem Change User Password in Linux Solution Method 1 1. If you log on as a normal user, change your password and use the passwd command. You will be asked to enter your old password and then enter the new password twice. [Www.bkjia.com @ localhost root] $ passwdChanging password for user wgb.Changing password for wgb(Current) UNIX password:New password:Retype new password:Passwd: all authentica

all files created by the administrator are actually owned by drobbins to prevent any conflicts of ownership. Because \ "drobbins \" shares content that contains the main directory, I want to save all the content owned by the drobbins account. 　　 Before starting the next topic, I should mention the \ "comment \" parameter. This allows you to add a descriptive comment visible from Windows to your sharing. 　　 Share many home directories We have introduced how to share a single home directory. Howe

object type application, in order to share the same object, you can use ref to refer to the object type, which is actually a pointer to an object instance.The following example shows how to use REF. First establish the object type home and object Table homes, and then insert the data.CREATE OR REPLACE TYPE home_type as OBJECT (Street VARCHAR2 (50),City Varchar2 (20),State VARCHAR2 (20),ZipCode VARCHAR2 (6),Owner VARCHAR2 (10));/CREATE TABLE

Write a function as required: add 200 of the employees whose salaries are lower than the average wage in the scott. emp table, and return the total number of employees who have changed their salaries. PLSQL has update operations, Write a function as required: add 200 of the employees whose salaries are lower than the average wage in the scott. emp table, and return the total number of employees who have changed their salaries. Update operations in PL/SQL, Environment Oracle 11.2.0 + SQL Plu

MySQL command line User Creation and authorization environment: MySQL Sever 5.1 + MySQL command line tool problem: use command line to create a user, authorize 1. create user: www.2cto.com command: create user username identified by 'Password'; Description: username -- the username you will CREATE, password -- the USER's login password. The password can be blank, if it is null, the user can log on to the server without a password. example: [SQL] CREATE USER