On 1/4/19 2:21 PM, Ken Tanzer wrote:
Hi. I've got a text field in a table that holds this style of timestamp:
2014-10-23T00:00:00
I'd like to be able to create an index on the date portion of this field
(as a date), because I have lots of queries that are searching for
particular dates or ranges.
I've tried various ways of getting to a date (::date, LEFT(x,10)::date,
etc.), but all of them throw the error "functions in index expression
must be marked IMMUTABLE."
?:
'2014-10-23T00:00:00'::timestamp
Can you also show the actual index expression?
Is there any way, hacky or otherwise, people know of to do this? Thanks
in advance.
Ken
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