>>Script Language and Platform: T-Sql
This script gives a table, with Table, Index, Index contained, Index that contains.
I recommend to review each case, before you drop.
I run it in the Query Analyzer, one statement at a time.
Author: Fernando Madrigal Hidalgo
USE database -- tab,idx,col,order create view listaidxcols as select SO.name as tabname, SI.name as idxname, IK.keyno as keyno, SC.name as colname from sysindexkeys IK, syscolumns SC, sysindexes SI, sysobjects SO where -- Link syscolumns IK.id=SC.id and IK.colid=SC.colid -- link sysindexes and IK.id=SI.id and IK.indid=SI.indid -- Link a sysObjects (tablas) and IK.id=SO.id and SO.xtype='U' and SI.name not like '_WA_Sys_%' and SI.name not like 'hind_%' -- how many cols x index create view cantcolsidx as select tabname, idxname, count(*) as numllaves from listaidxcols group by tabname,idxname -- get the redundant index list select A.tabname as tabla,A.idxname as Aidx, B.idxname as Bidx from cantcolsidx A, cantcolsidx B where A.tabname = B.tabname and A.numllaves < B.numllaves and A.idxname <> B.idxname and A.numllaves in ( select count(*) from listaidxcols C, listaidxcols D where C.tabname=A.tabname and C.idxname=A.idxname and D.tabname=B.tabname and D.idxname=B.idxname and C.idxname<>D.idxname and C.colname=D.colname and C.keyno =D.keyno ) -- Clean up drop view listaidxcols; drop view cantcolsidx;
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