I am trying to get an Oracle join to work as my Sybase join. The Sybase join returns all results and pads with...
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nulls. The Oracle join doesn't seem to function properly and will not pad the results with nulls. This is operating in Powerbuilder 6.5. Syntax for both are below:
//// ORACLE DRAW SELECT FAST.CONNECTION.CONNECT_ID, FAST.CONNECTION.DESCRIPTION, FAST.ACCOUNT_SU.SSO_LOGIN_ID FROM FAST.CONNECTION, FAST.ACCOUNT_SU WHERE ( FAST.account_su.connect_id = FAST.connection.connect_id ) and (( FAST.account_su.sso_login_id = 'rsmyer' )) AND ( FAST.connection.active_ind = 'y' )
// SYBASE DRAW SELECT dbo.connection.connect_id, dbo.connection.description, dbo.account.sso_login_id FROM dbo.connection, dbo.account WHERE ( dbo.connection.connect_id *= dbo.account.connect_id ) and (( dbo.account.sso_login_id = 'rsmyer' )) and ( dbo.connection.active_ind = 'y' )
*=" in the Sybase WHERE clause means that it's a left outer join, which returns all rows of the
connection table, with nulls in
sso_login_id for unmatched rows.
A left outer join in Oracle actually has similar syntax, except that it uses the outer join operator "
(+)" instead of an asterisk beside the equal sign. I'll remove the parentheses in your WHERE clause to make the Oracle outer join operator more noticeable --
SELECT FAST.CONNECTION.CONNECT_ID, FAST.CONNECTION.DESCRIPTION, FAST.ACCOUNT_SU.SSO_LOGIN_ID FROM FAST.CONNECTION, FAST.ACCOUNT_SU WHERE FAST.account_su.connect_id = FAST.connection.connect_id (+) and FAST.account_su.sso_login_id = 'rsmyer' AND FAST.connection.active_ind = 'y'
Place the outer join operator "
(+)" behind the columns of the table that will receive the nulls.
Actually, you should probably be using SQL standard LEFT OUTER JOIN syntax.
SELECT FAST.CONNECTION.CONNECT_ID, FAST.CONNECTION.DESCRIPTION, FAST.ACCOUNT_SU.SSO_LOGIN_ID FROM FAST.CONNECTION LEFT OUTER JOIN FAST.ACCOUNT_SU ON FAST.account_su.connect_id = FAST.connection.connect_id WHERE FAST.account_su.sso_login_id = 'rsmyer' AND FAST.connection.active_ind = 'y'
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