在sql数据库中创建表并定义具有适当数据类型的列，而不是将CSV导入表中如果表中只有字符串列，并且每列可以包含1000个字符，我认为您需要拆分表并加入视图

Create table in sql database and define columns with proper data types than import CSV into table if you have only string columns in table and each column can have 1000 chars I think that you need to split table and join in view