Bagaimana cara menggabungkan keduanya? Panduan Varchar dan panduan ketik kedua kunci utama

SQL Server berhenti cerdas ketika membandingkan nilai yang memiliki tipe data berbeda.

Skrip berikut berfungsi apa adanya tanpa konversi eksplisit

DECLARE @TableA TABLE (VARCHARID VARCHAR(48) PRIMARY KEY)
DECLARE @TableB TABLE (GUIDID UNIQUEIDENTIFIER PRIMARY KEY)

INSERT INTO @TableA VALUES 
    ('{0CAF3FBC-3C76-420B-B0C4-42867551E3B5}')
  , ('{0CAF3FBC-3C76-420B-B0C4-42867551E3B6}')
  , ( '0CAF3FBC-3C76-420B-B0C4-42867551E3B7' )
  , ( '0CAF3FBC-3C76-420B-B0C4-42867551E3B8' )

INSERT INTO @TableB VALUES 
    ('{0CAF3FBC-3C76-420B-B0C4-42867551E3B5}')
  , ( '0CAF3FBC-3C76-420B-B0C4-42867551E3B6' )
  , ('{0CAF3FBC-3C76-420B-B0C4-42867551E3B7}')
  , ( '0CAF3FBC-3C76-420B-B0C4-42867551E3B8' )

SELECT  *
FROM    @TableA a
        INNER JOIN @TableB b ON b.GUIDID = a.VARCHARID

Hasil

VARCHARID                               GUIDID
{0CAF3FBC-3C76-420B-B0C4-42867551E3B5}  0CAF3FBC-3C76-420B-B0C4-42867551E3B5
{0CAF3FBC-3C76-420B-B0C4-42867551E3B6}  0CAF3FBC-3C76-420B-B0C4-42867551E3B6
0CAF3FBC-3C76-420B-B0C4-42867551E3B7    0CAF3FBC-3C76-420B-B0C4-42867551E3B7
0CAF3FBC-3C76-420B-B0C4-42867551E3B8    0CAF3FBC-3C76-420B-B0C4-42867551E3B8