Databases: joining tables without duplicate rows / NULL values (2 Solutions!!)

Databases: joining tables without duplicate rows / NULL values (2 Solutions!!)

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Databases: Two rows having null values merge into one row without null values (2 Solutions!!)
Databases: Two rows having null values merge into one row without null values (2 Solutions!!)
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Databases: Two rows having null values merge into one row without null values (2 Solutions!!)

Databases: Two rows having null values merge into one row without null values (2 Solutions!!)
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