COUNT in Oracle - Examples & AI Generator

Oracle's COUNT function is essential for SQL users to determine the number of rows that match a specific condition. However, remembering Oracle-specific COUNT syntax—especially when switching from other databases—can lead to errors and slowdowns. With AI2sql - AI SQL Generator, you eliminate guesswork and coding delays: just enter your requirement in plain English and get production-ready COUNT queries for Oracle in 10 seconds—no SQL expertise required.

COUNT Syntax in Oracle

Basic Usage

SELECT COUNT(*) FROM table_name;

COUNT with Conditions

SELECT COUNT(column_name) FROM table_name WHERE condition;

COUNT Distinct Values

SELECT COUNT(DISTINCT column_name) FROM table_name;

Key note: Oracle syntax may differ from MySQL or SQL Server, especially in handling NULLs and DISTINCT.

COUNT Examples You Can Generate Instantly

Total Customers:
SELECT COUNT(*) FROM customers;

Total Orders Placed in 2024:

SELECT COUNT(*) FROM orders WHERE order_date >= TO_DATE('2024-01-01','YYYY-MM-DD');

Unique Product Categories Sold:

SELECT COUNT(DISTINCT category_id) FROM products;

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FAQ: COUNT in Oracle

Q: Does COUNT(*) include NULL values in Oracle?
A: Yes, COUNT(*) counts all rows, including those with NULLs. Use COUNT(column) to count only non-NULL values in that column.
Q: How do I count unique records?
A: Use COUNT(DISTINCT column_name) to get the number of unique values in a column.

Q: Can I use COUNT with GROUP BY in Oracle?
A: Absolutely! Example:

SELECT customer_id, COUNT(*) FROM orders GROUP BY customer_id;

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