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Introduction to Oracle PL/SQL
I. Objective of PL/SQL
Structured Query Language (SQL) is a common language used to access relational databases. It is a fourth-generation language (4gl) and its execution features are non-procedural, that is, you do not need to specify the s
In general PL/SQL programming, SQL can be used directly in DML and transaction-controlled statements, but DDL statements and system control statements cannot be used directly in PL/SQL, and it is possible to implement DDL statemen
, Otherwise, it may not appear normal; 13. Keep the last open SQL scriptWhen you re-enter PL/SQL developer, the Window list can open the document that was last exited:(1) The menu Tools->window list option is ticked;(2) to the right of Tools->perferences->user interface->options,Tick "Autosave desktop".(3) Exit PL/
it may not appear normal;13. Keep the last open SQL scriptWhen you re-enter PL/SQL developer, the Window list can open the document that was last exited:(1) The menu Tools->window list option is ticked;(2) to the right of Tools->perferences->user interface->options,Tick "Autosave desktop".(3) Exit PL/
record.
SQL code
Create or replace procedure sp_pro2 is
Begin -- execution part
Delete from mytest where name = 'Han shunping ';
End;
Createor replace procedure sp_pro2 is
Begin -- execution part
Deletefrom mytest where name = 'Han shunping ';
End;
PL/SQL Introduction
Introduction
When developers use PL/
Introduction to PL/SQL program design and plsql Program DesignZookeeper
① PL/SQL program design overview
PL/SQL is an advanced database programming language used to access ORACLE databa
, in the middle of the window, In the Insert and update groups box, select Fit and click Save to save the configuration file to the PLD installation directory, and click Close. In the rules file, enter the location of the configuration file, click OK to complete the profile switch. Then you can format the code so that each field is as close as possible on one line. 13. When the last SQL script that was opened is re-entered into
In general PL/SQL programming, SQL can be directly used in DML and transaction control statements, but DDL statements and system control statements cannot be directly used in PL/SQL, to use DDL statements and system control statem
must execute
I hope this article will help you with Oracle database programming.
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I. PL/SQL Developer Development ToolsPL/SQL Developer is an integrated development environment (IDE) for developing PL/SQL blocks, which is a standalone product, not a companion to Oracle.Second, PL/
of the menu item, and select the check box above in Autosave desktop on the right.B. Check the Window list option under Tools of the menu item.9. format SQL)When you get a long SQL statement and want to quickly view the logic, you can put it in this tool for formatting, and the statement logic will be clear at a glance.10. The database automatically detects connections Because the database is automatically
Stringvarchar
Similar to varchar data types, stores variable-length strings. Declaring methods the same as varchar
Table 3 Date and Boolean
DataType
Range
Description
BOOLEAN
True/false
Store logical value TRUE or FALSE, no parameters
DATE
01/01/4712 BC
Store fixed-length date and time values, date values contain time
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I. PL/SQL Developer Development ToolsPL/SQL Developer is an integrated development environment (IDE) for developing PL/SQL blocks, which is a standalone product, not a companion to Oracle.Second, PL/
SQL is the abbreviation for structrued Query Language, which is the Structured Query language. It is the standard that is responsible for the database interaction maintained with ANSI (American National Standards Institute). As the standard language of relational database, it has been adopted by many commercial DBMS products, making it become a mainstream language in relational database domain, including not only data query function, but also insertin
I. PL/SQL Developer Development ToolsPL/SQL Developer is an integrated development environment (IDE) for developing PL/SQL blocks, which is a standalone product, not a companion to Oracle.Second, PL/
Label:I. PL/SQL Developer Development ToolsPL/SQL Developer is an integrated development environment (IDE) for developing PL/SQL blocks, which is a standalone product, not a companion to Oracle. Second, PL/
Oracle Database-practical operations (3) PL/SQL
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PL/SQL is a process-oriented structured programming statement developed by Oracle for database business logic requirements. In the Oracle kernel, there are two important components:
Tools of the menu item, and select the check box above in Autosave desktop on the right.B. Check the Window list option under Tools of the menu item.9. format SQL)When you get a long SQL statement and want to quickly view the logic, you can put it in this tool for formatting, and the statement logic will be clear at a glance.10. The database automatically detects connections Because the database is automat
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