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to_char function returning wrong data - Mailing list pgsql-bugs

From Sreeni Survi
Subject to_char function returning wrong data
Date
Msg-id CAD91y4RLdbXvr+oNoN++Wmn2SjxHYRJZnT95f=BPZcSO0OBTxg@mail.gmail.com
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Responses Re: to_char function returning wrong data  (Andrew Gierth <andrew@tao11.riddles.org.uk>)
Re: to_char function returning wrong data  (Tom Lane <tgl@sss.pgh.pa.us>)
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Hi,

Below code has caused my data to be wiped off a table as my where clause depends on the below returned value.

select to_char(current_date - interval '5 weeks','IYYYWW') ;
201953

If the number of weeks is 4 or 6 or 3 it returns correct value.

select to_char(current_date - interval '4 weeks','IYYYWW') ;   
201901

select to_char(current_date - interval '6 weeks','IYYYWW') ;   
201852

This issue can have a serious effect.

Thanks,
Sreeni

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