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Question on space utilization - VARCHAR
If I have a column defined as VARCHAR(2000) and I insert a string
'WonderHowMuchSpaceThisTakes!!!' which has only 30 bytes, will Vertica consume the utilized 30 bytes or the all the allocated 2000?
0
Comments
Vertica stores the 30 characters efficiently on disk in the projection, but you will pay a performance penalty at run-time if varchar columns are "over-declared". The execution engine will use the full 2000 characters during query execution and will use extra storage for temp space operations.
--Sharon