I have created a table using:
create table dbo.employee(firstname nvarchar(100) null,lastname nvarchar(100) null)
Inserted some sample data using:
insert into dbo.employee values('Sachin','Tendulkar')
insert into dbo.employee values('Rohit','Sharma')
insert into dbo.employee values('Virendra','Sehwag')
insert into dbo.employee values('Irfan','Pathan')
Then I used always encrypted wizard to encrypt both columns of this table using SSMS v17. And now I am trying to concatenate firstname with lastname like this:
select concat(firstname, lastname) from dbo.employee
And it is giving me below error:
Operand type clash: nvarchar(100) encrypted with (encryption_type = 'DETERMINISTIC', encryption_algorithm_name = 'AEAD_AES_256_CBC_HMAC_SHA_256', column_encryption_key_name = 'SampleDB_CEK', column_encryption_key_database_name = 'SampleDB') is incompatible with varchar
When I try this:
select firstname + lastname from dbo.employee
It gives following error:
Encryption scheme mismatch for columns/variables 'firstname', 'lastname'. The encryption scheme for the columns/variables is (encryption_type = 'DETERMINISTIC', encryption_algorithm_name = 'AEAD_AES_256_CBC_HMAC_SHA_256', column_encryption_key_name = 'SampleDB_CEK', column_encryption_key_database_name = 'SampleDB') and the expression near line '1' expects it to be (encryption_type = 'PLAINTEXT') (or weaker).
Any help appreciated.