Where does oracle write code?

There are two locations for writing Oracle code: 1. SQL commands, used to interact with the database, written in the SQL command window or SQL Plus; 2. PL/SQL blocks, used to write program codes such as stored procedures, embedded in SQL commands.

Where to write code in Oracle

There are two main locations to write code in Oracle:

1. SQL command

SQL (Structured Query Language) is the main language used by Oracle database. It is used to interact with the database, including creating and modifying tables, inserting and updating data, and executing queries. SQL commands can be written in Oracle's SQL Command Window or in SQL Plus.

Example:

<code class="sql">CREATE TABLE students (
  id NUMBER PRIMARY KEY,
  name VARCHAR2(50) NOT NULL,
  age NUMBER
);</code>

2. PL/SQL block

PL/SQL (procedural SQL) is a An extended SQL language that allows the writing of program code such as stored procedures, functions, and triggers. PL/SQL blocks are embedded in SQL commands and are used to perform complex or repetitive tasks.

Example:

<code class="sql">DECLARE
  student_name VARCHAR2(50);
BEGIN
  SELECT name INTO student_name FROM students WHERE id = 1;
  DBMS_OUTPUT.PUT_LINE('Student name: ' || student_name);
END;</code>

The above is the detailed content of Where does oracle write code?. For more information, please follow other related articles on the PHP Chinese website!