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mister19stick19's avatar
mister19stick19
Copper Contributor
Oct 01, 2026

Error converting YYYY-MM-DD values to date

Workbook from third party, I think derived from CSV.

Workbook has UK format dates.

One of the columns has a date as a string in year first hyphen separated format YYYY-MM-DD.

Importing the data into SQL and calling TRY_CONVERT( datetime, InputDate, 105 ) returns NULL.

Turns out it's expecting a middle endian date, YYYY-DD-MM.

Who thought this was a good idea?

There is no culture in the world uses this.

What is the reasoning for this and why can't YYYY-MM-DD be acknowledged as a universal format, that is culture independent.

1 Reply

  • Viorel's avatar
    Viorel
    Brass Contributor

    Maybe the question should be asked to those who provided the CSV and workbook.