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Need to convert Integer to SmallInt

Need to convert Integer to SmallInt

(OP)
A small Int occupies twice less storage space than an Integer occupies. So, i'm thinking of converting a Integer column of 4 bytes in length to a Small Integer type. Is there any way to alter the data-type from Integer to SmallInt in DB2? If yes, will there be a considerable savings as I'm thinking?

RE: Need to convert Integer to SmallInt

"If yes, will there be a considerable savings as I'm thinking?"

If an average row contains 2k bytes, and this change will save 2 bytes per row, the savings will be minimal.

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