![Oracle NVL2/COALESCE: Decode Your Query Output Fast [2025]](data:image/svg+xml;base64,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)
Oracle & SQL
Oracle NVL2/COALESCE: Decode Your Query Output Fast [2025]
Master Oracle's NULL handling in 2025. This guide decodes NVL2 and COALESCE, comparing syntax, performance, and use cases to help you write cleaner, faster SQL.
Daniel Petrova•
7 min read