Delta Table Column name length

[smpa01]

The doc mentions following.

But I have been able to create delta tables with columns that are 63 characters in length. Some examples below

Can someone form MS please confirm. Is there really any restricition on the length of the column, if yes, whay am I able to create these columns in the delta table with these names?

Thank you in advance.

[v-jingzhan-msft · Accepted solution]

Hi @smpa01 

Based on my testing, the maximum length of a column name is actually 128 characters. If the length of the column name is greater than 128 characters, the following error message is returned when loading to a delta table:

Best Regards,
Jing
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