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How to find all fields with empty data in sql

2022-08-05 03:19:00 【CSDN Q&A】

For example, there are 1-10 fields, 1-6 have data, some are null, this is valid data, 7-10 are all null..Look for fields 7-10 to find out..It is mainly used to find fields with empty values ​​in seven or eighty fields.

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