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SqlCommand.DeriveParameters failed

程序员文章站 2022-05-31 18:06:23
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错误信息如下:


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,如果直接使用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
)


详细介绍:点击打开链接


或者通过sql,获取到DbCommand,再执行:

SqlCommand.DeriveParameters failed

ExecuteDataSet重载方法如下:

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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