(单选题)22: An ODBC/CLI application has the following pseudocode:
SQLAllocHandle( SQL_HANDLE_DBC, hEnv, &hDbc )
SQLConnect( hDbc, "CERTDB", SQL_NTS, "user1", SQL_NTS, "passwd", SQL_NTS )
SQLAllocHandle( SQL_HANDLE_STMT, hDbc, &hStmt )
SQLExecDirect( hStmt, "SET CURRENT SQLID db2cert", SQL_NTS )
Assuming all of the above calls execute successfully, which of the following fully qualified SQL statements is equivalent to:
SQLExecDirect( hStmt, "SELECT * FROM user1.table1 t1, table2 t2 WHERE
t1.col1=t2.col2", SQL_NTS )
A: SQLExecDirect( hStmt, "SELECT * FROM user1.table1 t1, table2 t2 WHERE
t1.col1=t2.col2", SQL_NTS )
B: . SQLExecDirect( hStmt, "SELECT * FROM user1.table1 t1, user1.table2 t2 WHERE
t1.col1=t2.col2", SQL_NTS )
C: . SQLExecDirect( hStmt, "SELECT * FROM user1.table1 t1, db2cert.table2 t2
WHERE t1.col1=t2.col2", SQL_NTS )
D: . SQLExecDirect( hStmt, "SELECT * FROM db2cert.table1 t1, db2cert.table2 t2
WHERE t1.col1=t2.col2", SQL_NTS )
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