Article ID: 122648
Article Last Modified on 7/27/2001
APPLIES TO
- Microsoft Open Database Connectivity 1.0
This article was previously published under Q122648
BUG# Addon_Bugs: 10567 (1.02.3231)
SYMPTOMS
A left outer join between two tables along with a third table in the FROM
clause can cause SQL_ERROR to be returned. This happens only when the outer
join escape syntax is used and the third table appears after the escape
sequence in the FROM clause.
SQLExecDirect:
SELECT t1.col1, t1.col2, t2.col1, t2.col2
FROM {oj testoj1 t1 left outer join testoj2 t2 on t1.col1 = t2.col1},
testoj3 t3,
WHERE t3.col1 = t1.col1
This generates a syntax error:
SQLSTATE = 37000 NativeError = 102
ErrorMsg = [Microsoft][ODBC SQL Server Driver][SQL Server] Incorrect
syntax near ','
CAUSE
The SQL Server driver incorrectly translates the above SELECT statement to:
SELECT t1.col1, t1.col2, t2.col1, t2.col2
FROM testoj1 t1, testoj2 t2
WHERE t1.col1 *= t2.col1 , testoj3 t3
WHERE t3.col1 = t1.col1
This is incorrect syntax; hence, it causes the error.
WORKAROUND
Rewrite the SELECT statement such that testoj3 appears before the outer
join escape clause:
SELECT t1.col1, t1.col2, t2.col1, t2.col2
FROM testoj3 t3,
{oj testoj1 t1 left outer join testoj2 t2 on t1.col1 = t2.col1}
WHERE t3.col1 = t1.col1
STATUS
Microsoft has confirmed this to be a problem in ODBC SQL Server Driver
versions 1.02.3231. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.
Additional query words: 1.02.3231 kbbug1.02.3231 kbprg kberrmsg
Keywords: kbbug KB122648