Hello:
Can anyone explain to me what exactly 'Alter Session' will do?
Will it alter the session all the way until it close?
How do I find out what kind of mode is my SQLPLUS session currently on?
I have following script like:
ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD-HH24.MI.SS';
SELECT ...
FROM ...
WHERE ...
(TO_DATE(SUBSTR(KOMP.DATCRE,1,19),'YYYY-MM-DD-HH24.MI.SS') < TO_DATE(SUBSTR(KOMP.DATCHG,1,19),'YYYY-MM-DD-HH24.MI.SS')) and
(TO_DATE(TO_CHAR(SYSDATE-1),'YYYY-MM-DD-HH24.MI.SS') < TO_DATE(SUBSTR(KOMP.DATCHG,1,19),'YYYY-MM-DD-HH24.MI.SS'));
When I run the script as above, it will only return 2 records, which is correct.
However, when I remove "ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD-HH24.MI.SS';"
the query will return 8000 records which is wrong.
What function does 'ALTER SESSION' have here?
Thanks
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