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用 SQL DOUBLE 数据类型设置指定消息属性。
消息发送后就不能再更改此属性。
在以下示例中,创建一条消息,设置双精度型属性 mydoubleproperty1 和 mydoubleproperty2,然后将消息发送到地址 clientid\queuename:
begin declare @msgid varchar(128); set @msgid = ml_qa_createmessage(); call ml_qa_setdoubleproperty( @msgid, 'mydoubleproperty1', -12.34e-56 ); call ml_qa_setdoubleproperty( @msgid, 'mydoubleproperty2', 12.34e56 ); call ml_qa_putmessage( @msgid, 'clientid\queuename' ); commit; end