Lädt...


🔧 RECORD vs COLLECTION in PLSQL


Nachrichtenbereich: 🔧 Programmierung
🔗 Quelle: dev.to

In PL/SQL (Oracle's Procedural Language for SQL), "record" and "collection" have specific meanings related to how data is structured and managed within the PL/SQL program:

  1. Record:

A RECORD is a composite data type in PL/SQL that can hold a single row of data with multiple fields. Each field can have a different data type.

It is similar to a row in a table where each column corresponds to a field in the record.

Example: You can define a RECORD to store details of a single employee with fields like emp_id, emp_name, and emp_salary.

Example in PL/SQL:

DECLARE
TYPE emp_record IS RECORD (
emp_id NUMBER,
emp_name VARCHAR2(50),
emp_salary NUMBER
);
employee emp_record;
BEGIN
employee.emp_id := 101;
employee.emp_name := 'John Doe';
employee.emp_salary := 5000;
END;

  1. Collection:

A COLLECTION is a data structure that can hold multiple values of the same data type or composite types. In PL/SQL, there are three types of collections: INDEX BY tables (associative arrays), VARRAY (variable-size arrays), and NESTED TABLE.

Unlike a RECORD, a collection can store multiple rows (or multiple records). It allows you to handle bulk data efficiently.

Collections are useful for working with sets of data in loops or for batch processing.

Example of a Nested Table in PL/SQL:

DECLARE
TYPE emp_table IS TABLE OF VARCHAR2(50);
employees emp_table;
BEGIN
employees := emp_table('John Doe', 'Jane Smith', 'Michael Brown');
FOR i IN 1..employees.COUNT LOOP
DBMS_OUTPUT.PUT_LINE(employees(i));
END LOOP;
END;

Summary:

A RECORD is used to group related fields into a single unit, representing a row of data.

A COLLECTION is used to store multiple elements (rows, values, or records), allowing batch operations on sets of data.

...

🔧 RECORD vs COLLECTION in PLSQL


📈 38.84 Punkte
🔧 Programmierung

🔧 VARRAY (Variable-size array) - Collection in PLSQL


📈 30.03 Punkte
🔧 Programmierung

🔧 RECORD in PLSQL


📈 29.67 Punkte
🔧 Programmierung

🔧 Exception handling in PLSQL | Predefined and User Defined


📈 20.86 Punkte
🔧 Programmierung

🔧 PLSQL BEST PART 2


📈 20.86 Punkte
🔧 Programmierung

🔧 Cursor in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Exceptional Handling in PLSQL | Main Part


📈 20.86 Punkte
🔧 Programmierung

🔧 Pipelined Table Functions | ORACLE PLSQL | Best Explanation


📈 20.86 Punkte
🔧 Programmierung

🔧 BULK COLLECT and FORALL in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 PRAGMA EXCEPTION_INIT in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Top 10 advanced-level questions | ORACLE PLSQL DEVELOPER


📈 20.86 Punkte
🔧 Programmierung

🔧 CASE | DECODE | IF ELSE - Conditional Logic in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Exception handling in PLSQL with EXCEPTION keyword


📈 20.86 Punkte
🔧 Programmierung

🔧 SQL PLSQL | Most Important Concepts


📈 20.86 Punkte
🔧 Programmierung

🔧 PLSQL Top 10 Interview Questions


📈 20.86 Punkte
🔧 Programmierung

🔧 Named Calling Notations in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Pranav Bakare | PLSQL DEVELOPER


📈 20.86 Punkte
🔧 Programmierung

🔧 PLSQL - Day 02


📈 20.86 Punkte
🔧 Programmierung

🔧 Stored procedure in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Normal variables and bind variables in ORACLE PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 PLSQL - Day 1


📈 20.86 Punkte
🔧 Programmierung

🔧 Procedure vs Function | PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Materialized view in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 PRAGMA EXCEPTION_INIT | keyword in PLSQL | Exceptional Handling


📈 20.86 Punkte
🔧 Programmierung

🔧 PACKAGES in PLSQL in detail


📈 20.86 Punkte
🔧 Programmierung

🔧 Deterministic Functions in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 CURSOR in PLSQL | Best Explanation


📈 20.86 Punkte
🔧 Programmierung

🔧 Context Switching in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 PLSQL DEV


📈 20.86 Punkte
🔧 Programmierung

🔧 Exception Handling in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Formal and Actual parameters in Stored Procedure in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Associative arrays in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 DBMS_OUTPUT.PUT_LINE in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Difference Between Varray and Nested Table in PLSQL


📈 20.86 Punkte
🔧 Programmierung

🔧 Procedure in PLSQL


📈 20.86 Punkte
🔧 Programmierung

matomo