Oracle SQL Single Row Functions | Character & Conversion Explained in SQL Developer (2025)
You’ll learn how to:
Convert data types using TO_CHAR, TO_DATE, and TO_NUMBER
Manipulate text using LOWER, UPPER, INITCAP, TRIM, LTRIM, RTRIM, SUBSTR, and CONCAT
Understand how each function processes one row at a time
Apply these functions to real data from the HR schema
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