Understanding varchar(max) 8000 column and why I can store more than 8000 characters in it

Posted: edited May 18 at 5:32 - Source : stackoverflow

From this Microsoft doc,+

n defines the string length and can be a value from 1 through 8,000. max indicates that the maximum storage size is 2^31-1 bytes (2 GB). The storage size is the actual length of the data entered + 2 bytes.

Please help me understand this.

The max characters for varchar seems to be 8000, which is way less than 2GB worth of data.

I see that there are records in this varchar(max) column of a specific table that have len(mycolumn) > 100 000. Thus I know I can get way more than 8000 characters into a varchar(max) column.

Question 1: How does the 8000 characters come into play and where should I be aware of it?

Question 2 : will a .net datareader query to this column always return the full result with 100 000+ character?