Insert Statement error, ORA-00984: column not allowed here - sql

Question

any help guys I got error column not allowed here for datetime !
INSERT INTO MEMBERS_CONTRIBUTIONS (
CONTRIBUTION_TYPE,
FROM_DATE,
TO_DATE,
ADDED_PERIOD_IN_MONTHS,
MEMBER_AMOUNT,
THE_CURRENCY,
MATURITY_DATE
) VALUES (
4,
convert(datetime, '6/1/2016 12:00:00 AM', 5),
convert(datetime, '6/1/2016 12:00:00 AM', 5),
0,
2500,
'OMR',
convert(datetime, '6/30/2016 12:00:00 AM', 5)
);

Answer 1

You are trying to use the SQL Server CONVERT() function in Oracle - the Oracle CONVERT() function converts from one character-set to another and does not do what you want.
Instead, you can use a date literal:
INSERT INTO MEMBERS_CONTRIBUTIONS (
CONTRIBUTION_TYPE,
FROM_DATE,
TO_DATE,
ADDED_PERIOD_IN_MONTHS,
MEMBER_AMOUNT,
THE_CURRENCY,
MATURITY_DATE
) VALUES (
4,
DATE '2016-06-01',
DATE '2016-06-01',
0,
2500,
'OMR',
DATE '2016-06-30'
);
In Oracle, all DATE types have both a date and time component - the date literal syntax will just set the time component to 00:00:00 (or 12:00:00 AM in a 12 hour clock).
Or if you want to specify the time component then you can use the timestamp literal (which Oracle will implicitly cast to a DATE type if that is the type of the column you are storing it in):
INSERT INTO MEMBERS_CONTRIBUTIONS (
CONTRIBUTION_TYPE,
FROM_DATE,
TO_DATE,
ADDED_PERIOD_IN_MONTHS,
MEMBER_AMOUNT,
THE_CURRENCY,
MATURITY_DATE
) VALUES (
4,
TIMESTAMP '2016-06-01 00:00:00',
TIMESTAMP '2016-06-01 00:00:00',
0,
2500,
'OMR',
TIMESTAMP '2016-06-30 00:00:00'
);
Or you could explicitly cast a string literal to a date using the TO_DATE() function:
INSERT INTO MEMBERS_CONTRIBUTIONS (
CONTRIBUTION_TYPE,
FROM_DATE,
TO_DATE,
ADDED_PERIOD_IN_MONTHS,
MEMBER_AMOUNT,
THE_CURRENCY,
MATURITY_DATE
) VALUES (
4,
TO_DATE( '6/1/2016 12:00:00 AM', 'MM/DD/YYYY HH12:MI:SS AM' ),
TO_DATE( '6/1/2016 12:00:00 AM', 'MM/DD/YYYY HH12:MI:SS AM' ),
0,
2500,
'OMR',
TO_DATE( '6/30/2016 12:00:00 AM', 'MM/DD/YYYY HH12:MI:SS AM' )
);

Answer 2

The expression convert(datetime, '6/1/2016 12:00:00 AM', 5) calls for a column with the name datetime. But your insert statement doesn't offer a context involving any columns at all, so the query parser can't make any sense of datetime. Hence your ORA-00948 error.
I guess you're trying to put a date/time constant, which from your example could mean either 1-Jun-2016 or 6-Jan-2016, into a date datatype. You need to use the TO_DATE() function to convert your strings to that format. I'm not going to suggest a particular form of the call, because I don't know exactly how your strings are formatted.