1Fallbacks
COALESCE can take many arguments. COALESCE(mobile_phone, home_phone, work_phone, 'Unreachable'). The database will check each column from left to right, returning the very first one that actually has data in it.
Learn about The Power of COALESCE in this comprehensive SQL & Databases development tutorial. Default values.
UNLOCK NODES BY LEARNING NEW TAGS.
COALESCE can take many arguments. COALESCE(mobile_phone, home_phone, work_phone, 'Unreachable'). The database will check each column from left to right, returning the very first one that actually has data in it.

Pascual Vila
Frontend Instructor // Code Syllabus
SQL Conditional block.
// CASE contextReturns first non-null value.
// COALESCE context