The issue:
insert into tb_Admin values (1,111, 'ricky',1234)
Implicit conversion from data type varchar to varbinary is not allowed. Use the CONVERT function to run this query.
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Root Cause:the column 'AdminName' define as varbinary.
--The table structure:
CREATE TABLE [dbo].[tb_Admin](
[ID] [int] NOT NULL,
[AdminNum] [varchar](50) NULL,
[AdminName] [varbinary](50) NULL,
[AdminPwd] [varbinary](50) NULL,
CONSTRAINT [PK_tb_Admin] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
Resolution:
Insert into tb_Admin(ID,AdminNum,AdminName,AdminPwd) values (1,111,cast('name' as varbinary(50)),cast('1234' as varbinary(50)))Result1:
ID AdminNum AdminName AdminPwd
1 111 0x6E616D65 0x31323334
Search the original information:
SELECT TOP 10 [ID]
,[AdminNum]
, cast([AdminName] as varchar(50))
, cast([AdminPwd] as varchar(50))
FROM [db_ExamOnline].[dbo].[tb_Admin]
Result2:
ID AdminNum (No column name) (No column name)
1 111 name 1234
网站名称：Fromdatatypevarchartovarbinaryisnotallowed
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