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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
com.ibatis.common.jdbc.exception.NestedSQLException: --- The error occurred in sqlserver/sqlserver-template.xml. --- The error occurred while applying a parameter map. --- Check the Template.getTemplate-InlineParameterMap. --- Check the statement (query failed). --- Cause: java.sql.SQLException: Invalid column name 'GROUP_ID'.
org.springframework.jdbc.UncategorizedSQLException: SqlMapClient operation; uncategorized SQLException for SQL ; SQL state [null]; error code ; Error: executeQueryForObject returned too many results.; nested exception is java.sql.SQLException: Error: executeQueryForObject returned too many results.