SqlCommand.DeriveParameters failed
错误信息例如以下:
SqlCommand.DeriveParameters failed because the SqlCommand.CommandText property value is an invalid multipart name "SELECT * from tableA", the current limit of "4" is insufficient。
错误原因:
使用Enterprise Library进行数据库操作时,假设直接使用sql 语句而非存储过程。一定要用重载方法:
_db.ExecuteDataSet(CommandType type,String sql)
而不是:
public virtual DataSet ExecuteDataSet(
string storedProcedureName,
params Object[] parameterValues
)
具体介绍:点击打开链接
或者通过sql,获取到DbCommand,再运行:
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ExecuteDataSet重载方法例如以下:
Database.ExecuteDataSet Method (DbCommand)
public virtual DataSet ExecuteDataSet(
DbCommand command
)
Database.ExecuteDataSet Method (CommandType, String)
public virtual DataSet ExecuteDataSet(
CommandType commandType,
string commandText
)
Database.ExecuteDataSet Method (DbCommand, DbTransaction)
public virtual DataSet ExecuteDataSet(
DbCommand command,
DbTransaction transaction
)
Database.ExecuteDataSet Method (String, Object[])
public virtual DataSet ExecuteDataSet(
string storedProcedureName,
params Object[] parameterValues
)
Database.ExecuteDataSet Method (DbTransaction, CommandType, String)
public virtual DataSet ExecuteDataSet(
DbTransaction transaction,
CommandType commandType,
string commandText
)
Database.ExecuteDataSet Method (DbTransaction, String, Object[])
public virtual DataSet ExecuteDataSet(
DbTransaction transaction,
string storedProcedureName,
params Object[] parameterValues
)
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