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Open Access Technology International

Empresa engajada

Pergunta de entrevista da empresa Open Access Technology International

Whats an inner and outer join.

Respostas da entrevista

Sigiloso

16 de mar. de 2014

Inner join is a simple join that selects all records from the multiple tables as long as there is a match between the columns.

Sigiloso

16 de mar. de 2014

Outer join: returns all the records from the two joined tables even if no matching record exists.