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how do I resolve error ORA-01861 during query execution

When i execute the following query:

elect pdf_name, site, to_char(publication_date, 'YYYY-MM-DD') as publication_date, modified_date, db_inserted,db_updated from bib_holdings where publication_date <= '1900-01-01';

I get the ORA-01861 error

It is not apparant to me how I am formatting my literal string the wrong way. can someone help me with this?

sikyala

Asked: 2011-09-26

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3 Solutions

LVL 79

slightwv (䄆 Netminder) Commented: 2011-09-26

Change:
publication_date <= '1900-01-01'

to:
publication_date <= to_date('1900-01-01','YYYY-MM-DD')

LVL 79

slightwv (䄆 Netminder) Commented: 2011-09-26

Try to never to implicit conversions.

When you need a 'string' use to_char.
When you need a date, use to_date.

Do not let Oracle 'guess' when you need a string turned into a date and what format it is in and visa-versa.

iaakovCommented: 2011-09-27

Try

where trunc(publication_date) <= to_date('1900-01-01','yyyy-mm-dd')

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how do I resolve error ORA-01861 during query execution

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