Understanding the DUAL Table in Oracle.

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Understanding the DUAL Table in Oracle.

👉 The DUAL table in Oracle is a special, single-row, single-column table automatically created by the Oracle database.

👉 It is primarily used to select pseudo-columns, perform calculations, and execute functions without needing an actual table.

💡 Did you know Oracle's DUAL table has evolved from a physical table to a fully virtualized structure?

✅ Check out this detailed breakdown, including comparisons with MySQL, PostgreSQL, and SQL Server!

😯 Which fact surprised you the most? Drop your thoughts below!

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