Oracle

CREATE SEQUENCE Mylobs_id_seqNominvalueNomaxvalueNocycleCACHE 20NoorderINCREMENT by 1;CREATE TABLE Mylobs (ID number PRIMARY KEY,Mylob CLOB)Insert Header ("Content-type:text/html;charset=utf-8");Error_reporting (E_all);Set_time_limit (0)

test connection usage for Oracle database ① connect to Oracle database, list all databases [[email protected] sqoop] $sqoop list-databases--connect jdbc 10.1.69.173:1521:orclbi--username huangq-por Sqoop list-databases--connect jdbc Racle:thin10.1

There are several ways in which a function/procedure in Oracle Returns a result set:In the case of function return, the stored procedure needs to be changed to an out parameter and passed in the Oracle 10g test.(1) Returns a cursor:The type of

database.php 123456789101112131415161718 $active_group = ‘default‘;$active_record = TRUE;$db[‘default‘][‘hostname‘] = ‘localhost/xe‘;$db[‘default‘][‘username‘] = ‘root‘;$db[‘default‘][‘password‘] = ‘root‘;$db[‘default‘][‘database‘] =

Original source: http://blog.itpub.net/21614165/viewspace-766937/Oracle Data Import and export imp/exp is equivalent to oracle data Restore and backup. the exp command can export data from a remote database server to a local dmp file, andtheimp

Oracle data import and export imp/exp is equivalent to Oracle data restore and backup. The EXP command can export data from a remote database server to a local DMP file, and the IMP command can import the DMP file from a local to a distant database

View and other object operationsExperimental purpose(1) Grasp the establishment of the view, query, modify, delete operations.(2) to master the establishment of synonyms, query, modify, delete operations, compare the operation of the synonym to the

Database backup and RecoveryExperimental purposeMaster backup methods commonly used in Oracle databases.Experimental content(1) Methods of data backupExperimental steps1. Database backup1) Oracle Physical backup and recovery.0. Preparatory work:(1)

64-bit operating system how to use Plsql to connect remote or local Oracle data in the case of locally installed Oracle databasesCurrently Plsql only supports 32-bit Oracle clients, how can I use Plsql to connect data with a 64-bit Oracle database

Create or Replace function Fuc_get_authorname (recid_in in Varchar2, admid_in in varchar2) return varchar2 is Result varch AR2 (8000); Names VARCHAR2 (4000); Cursor Cur_get_authornames is a SELECT peoplename from Tb_news_contri_author Where

Character function--return character valueThese functions all receive parameters of the character family type (except CHR) and return the character value. In addition to the special instructions, most of these functions return a numeric value of

--Create a stored procedure Point_diatanceCreate or Replace procedure Point_distance Authid Current_User is--Defining variablesNet1 float;Net2 float;Net3 int;NET4 int;NET5 int;Lata float;Lona float;LATB float;LONB float;Net6 float;Net7 float;Net8

The most important thing about Oracle tree queries is the Select...start with ... prior syntax. Depending on the syntax, we can list a table-shaped structure in the order of the tree. Below is a list of common query methods for tree queries in

1. Query all ColumnsSELECT * from table name;2. Query table structureDESC table name;3. Query the specified columnSelect Ename,sal,job from table name;4. View all tables and fields in OracleGet table:Select table_name from User_tables; The current

Original Oracle SQL Developer useComparison:Plsqldev: Third-party, fast startup software, slow execution of SQL queriesSqldeveloper:oracle company, slow startup software, fast execution of SQL queriesDisadvantages:Every once in a while (about 10

Oracle uses comment statements to add Table CommentsThe oracle comment statement can be used to add remarks to tables, fields, views, and other objects.Syntax:Comment on TABLE table_name IS 'Remarks ';Permission requirements:By default, users can

Oracle Study Notes (4) ------------ learning route Summary It was a little difficult to learn Oracle, so I found some learning routes on the Internet to learn regularly, which is more efficient and shared with you. Concepts|New Features______________

Temporary instance processing is disabled when 80 w data is removed at a time Recently, When I deduplicate a million data business table, the de-duplication operation was stuck. The following is a simple review. 1. query the data volume of the

Oracle latest SQL adequacy drill 1 Drop table example; create table example (ID Number (4) not null, name varchar (25), constraint example_id primary key (id); drop SEQUENCE example_sequence; create sequence example_sequenceINCREMENT BY 1 -- add

In the. Net project, use ODAC to link Oracle Database configurations In the. Net project, use ODAC to link Oracle Database configurations I. Development Environment 1. ODAC connection method ODAC directly uses Oracle to call the interface (OCI ).