DEMO数据导入问题

请问导入DEMO数据的时候必须用新的空白数据库吗?
我在执行sql的时候出现了很多不存在的错误:

NOTICE: sequence “account_id_seq” does not exist, skipping
NOTICE: sequence “account_shares_id_seq” does not exist, skipping
NOTICE: sequence “aiFiles_id_seq” does not exist, skipping
NOTICE: sequence “aiSettings_id_seq” does not exist, skipping
NOTICE: sequence “apiKeys_id_seq” does not exist, skipping
NOTICE: sequence “applicationPlugins_id_seq” does not exist, skipping
NOTICE: sequence “applicationVersion_id_seq” does not exist, skipping
NOTICE: sequence “approvalExecutions_id_seq” does not exist, skipping
NOTICE: sequence “approvalMsgTpls_id_seq” does not exist, skipping
NOTICE: sequence “approvalRecords_id_seq” does not exist, skipping
NOTICE: sequence “approvals_id_seq” does not exist, skip

请赐教

是的,用空白数据库,并且环境变量配置默认值 DB_UNDERSCORED = false