I need to modify a table within my SQL database. I made the changes to the model.
I want to perform the migration without losing existing data.
I ran dotnet ef add ColumnChange in the folder that has the
csproj file. I didn’t get any error message.
I than run dotnet ef database update and got the following error message:
Failed executing DbCommand (686ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
CREATE TABLE [Employee] (
[Employee ID] int NOT NULL,
[Badge] int NOT NULL,
[Title] nvarchar(max) NULL,
CONSTRAINT [PK_Employee] PRIMARY KEY ([EmployeeID])
There is already an object name ‘Employee’ in the database
How do I modify a table without losing data? I’m new to this so please explain it so a four year old understand it.
Thank you in advance for your time and help.
It is very much appreciated.
