Suponha que você tenha duas tabelas, table1 e table2, e você queira fazer um LEFT JOIN entre elas e aplicar a função COALESCE em uma coluna da table2. SELECT t1.*, COALESCE(t2.column2, 'N/A') AS ...
pyspark.sql.utils.AnalysisException: "Invalid usage of '*' in expression 'coalesce';" #586 Closed weixiuli opened on Jul 23, 2019 ...
Data transformation and optimization — tasks that many, if not most, large enterprises deal with — aren’t easy. And thanks to the enormous growth of AI and cloud technologies, the challenges appear to ...
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