由于人员的不段增加varchar(5000)已经不能满足需求，现在的方案是把字段类型由varchar改为text
1 --修改短信人员字段 2 alter table T_BAS_SendMessage alter column [Content] text 3 alter table T_BAS_SendMessage alter column ReceiveInsideName text 4 alter table T_BAS_SendMessage alter column ReceiveInsideLoginName text 5 alter table T_BAS_SendMessage alter column ReceiveOutsideName text 6 alter table T_BAS_SendMessage alter column ReceiveOutsidePhone text 7 alter table T_BAS_SendMessage alter column WeChatUniqueLogo text 8 alter table T_BAS_SendMessage alter column WeChatNumber text 9 go
微软的说法是用这个数据类型来代替之前的text、ntext 和 image 数据类型，它们之间的对应关系为：
varchar(max)-------text;
nvarchar(max)-----ntext;
varbinary(max)----image.
建议使用varchar(max)代替text
1 alter table T_BAS_SendMessage alter column [Content] varchar(max) 2 alter table T_BAS_SendMessage alter column ReceiveInsideName varchar(max) 3 alter table T_BAS_SendMessage alter column ReceiveInsideLoginName varchar(max) 4 alter table T_BAS_SendMessage alter column ReceiveOutsideName varchar(max) 5 alter table T_BAS_SendMessage alter column ReceiveOutsidePhone varchar(max) 6 alter table T_BAS_SendMessage alter column WeChatUniqueLogo varchar(max) 7 alter table T_BAS_SendMessage alter column WeChatNumber varchar(max) 8 go