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Re: redundant indexes [message #18591] Wed, 06 February 2002 18:48
Dillip
Messages: 1
Registered: February 2002
Junior Member
Try this script (for Oracle)
column redundant_index format a39
column sufficient_index format a39

select
o1.name||'.'||n1.name redundant_index,
o2.name||'.'||n2.name sufficient_index
from
sys.icol$ ic1,
sys.icol$ ic2,
sys.ind$ i1,
sys.obj$ n1,
sys.obj$ n2,
sys.user$ o1,
sys.user$ o2
where
ic1.pos# = 1 and
ic2.bo# = ic1.bo# and
ic2.obj# != ic1.obj# and
ic2.pos# = 1 and
ic2.intcol# = ic1.intcol# and
i1.obj# = ic1.obj# and
bitand(i1.property, 1) = 0 and
( select
max(pos#) * (max(pos#) + 1) / 2
from
sys.icol$
where
obj# = ic1.obj#
) =
( select
sum(xc1.pos#)
from
sys.icol$ xc1,
sys.icol$ xc2
where
xc1.obj# = ic1.obj# and
xc2.obj# = ic2.obj# and
xc1.pos# = xc2.pos# and
xc1.intcol# = xc2.intcol#
) and
n1.obj# = ic1.obj# and
n2.obj# = ic2.obj# and
o1.user# = n1.owner# and
o2.user# = n2.owner#
/
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