Disables compression indexes.
If compression is disabled, no form of compression is used for
hashed indexes, and prefix compression or suffix compression is
used for sorted indexes. Prefix compression is the compression
of the first bytes of an index key that are common in consecutive
index keys. Prefix compression saves space by not storing these
common bytes of information. Conversely, suffix compression is
the compression of the last bytes from adjacent index keys. These
bytes are not necessary to guarantee uniqueness.
You cannot enable index compression using the ALTER INDEX
statement once you specified the DISABLE COMPRESSION clause of
the CREATE INDEX statement.
Index compression is disabled by default.