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1、ESF将mysql中gtzz_base_db数据库迁移到openGauss中，
Mysql中32个长度的数据，放到OpenGauss中会报数据太长，原因是：每个汉字占的长度不同！OpenGauss需要再开大一些！
2、逐个表检查，对于字段默认值：pg_systimestamp() 修改为now()
3、缺失主键的添加上主键信息
