Query to show the most useful Indexes in SQL?

So I'm familiar with the Queries that show the Bad Indexes, but, is there a query I can run that shows which Indexes are the best, or, most used?
This topic first appeared in the Spiceworks Community

Hi ganesh,
Thanks for response.
but assumption is wrong.
the values below 200 also needed and the values above 200(400,204) has to show 200 in the output of the report.
format before the output of the query.
james 400
kitty 200
jhones 180
francy 204.
Now my output has to show
james 200
kitty 200
jhones 180
francy 200.
I hope you can understand better now.
Thanks,
James

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Hi,
We have been using indexes on all tables until recently when we faced problems with queries like the one below:
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Thank you Karthik for your reply.Here are the explain plan report (as shown on Oracle 9i Enterprise Manager)
*1-Explain plan without Indexes:*
Execution Steps:
Step # Step Name
11 SELECT STATEMENT
10 MERGE JOIN
7 SORT [JOIN]
6 NESTED LOOPS
4 NESTED LOOPS
1 ERMS.STUDENT_DEGREE TABLE ACCESS [FULL]
3 ERMS.STUDENTS TABLE ACCESS [BY INDEX ROWID]
2 ERMS.SYS_C006642 INDEX [UNIQUE SCAN]
5 ERMS.SYS_C007065 INDEX [RANGE SCAN]
9 SORT [JOIN]
8 ERMS.COURSE TABLE ACCESS [FULL]
Step # Description
1 This plan step retrieves all rows from table STUDENT_DEGREE.
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3 This plan step retrieves rows from table STUDENTS through ROWID(s) returned by an index.
4 This plan step joins two sets of rows by iterating over the driving, or outer, row set (the first child of the join) and, for each row, carrying out the steps of the inner row set (the second child). Corresponding pairs of rows are tested against the join condition specified in the query's WHERE clause.
5 This plan step retrieves one or more ROWIDs in ascending order by scanning the B*-tree index SYS_C007065.
6 This plan step joins two sets of rows by iterating over the driving, or outer, row set (the first child of the join) and, for each row, carrying out the steps of the inner row set (the second child). Corresponding pairs of rows are tested against the join condition specified in the query's WHERE clause.
7 This plan step accepts a row set (its only child) and sorts it in preparation for a merge-join operation.
8 This plan step retrieves all rows from table COURSE.
9 This plan step accepts a row set (its only child) and sorts it in preparation for a merge-join operation.
10 This plan step accepts two sets of rows sorted on the join key. By walking both sets of rows in the order of the join key, every distinct pair of rows satisfying the join condition in the WHERE clause is found through a single pass of the row sets.
11 This plan step designates this statement as a SELECT statement.
*2-Explain plan with Indexes:* (I added index on column campus_code which is a varchar2 column)
Execution Steps:
Step # Step Name
11 SELECT STATEMENT
10 MERGE JOIN
7 SORT [JOIN]
6 NESTED LOOPS
4 NESTED LOOPS
1 ERMS.COURSE TABLE ACCESS [FULL]
3 ERMS.STUDENTS TABLE ACCESS [BY INDEX ROWID]
2 ERMS.INDEX_STUDENTS_CAMPUS_CODE INDEX [RANGE SCAN]
5 ERMS.SYS_C007065 INDEX [RANGE SCAN]
9 SORT [JOIN]
8 ERMS.STUDENT_DEGREE TABLE ACCESS [FULL]
Step # Description
1 This plan step retrieves all rows from table COURSE.
2 This plan step retrieves one or more ROWIDs in ascending order by scanning the B*-tree index INDEX_STUDENTS_CAMPUS_CODE.
3 This plan step retrieves rows from table STUDENTS through ROWID(s) returned by an index.
4 This plan step joins two sets of rows by iterating over the driving, or outer, row set (the first child of the join) and, for each row, carrying out the steps of the inner row set (the second child). Corresponding pairs of rows are tested against the join condition specified in the query's WHERE clause.
5 This plan step retrieves one or more ROWIDs in ascending order by scanning the B*-tree index SYS_C007065.
6 This plan step joins two sets of rows by iterating over the driving, or outer, row set (the first child of the join) and, for each row, carrying out the steps of the inner row set (the second child). Corresponding pairs of rows are tested against the join condition specified in the query's WHERE clause.
7 This plan step accepts a row set (its only child) and sorts it in preparation for a merge-join operation.
8 This plan step retrieves all rows from table STUDENT_DEGREE.
9 This plan step accepts a row set (its only child) and sorts it in preparation for a merge-join operation.
10 This plan step accepts two sets of rows sorted on the join key. By walking both sets of rows in the order of the join key, every distinct pair of rows satisfying the join condition in the WHERE clause is found through a single pass of the row sets.
11 This plan step designates this statement as a SELECT statement.

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Hi SRM gurus,
While creating a shopping cart one of our most used category gets selected by default before we start doing anything.
Everytime we have to change the category.
Is there a way that will become blank and we can select from the dropdown or the find list.
Kindly suggest.
We are using SRM component version 4.0, SRM server 5.0, our patch level 0008.
Thx. & reg.,
Sridhar.

Hi
Yes.. This was happening with us when we used SRM 4.0 version.
We have used an BADI Implementation to resolve this issue.
The BADI name is BBP_F4_READ_ON_EXIT 
For Product category -> Product category (attr. WGR, PRCAT) GET_CATEGORY Method, you need to go ahead.
Read the documenation of this BADI and you will get the problem resolved after implementing the same.
Here is the documentation
BBP_F4_READ_ON_EXIT
Short Text
Restrict the Display in Input Helps and Search Helps
You can use the Business Add-In (BAdI) BBP_F4_READ_ON_EXIT to restrict (or augment) the list of values and favorites that are output in the input and search helps. You can only process data elements for which input helps exist on HTML templates. The following three BAdIs are also available:
BBP_F4_READ_ON_ENTRY
Use this BAdI if you do not just want to restrict the favorites and values list but also want to select this yourself.
BBP_F4_MEM_UPDATE
BBP_F4_SAVE_DB
The following three modules are used to process the values per data element:
BBP_GET_<data element>_F4
Supplies a list of all values and user-specific favorites. You can influence how this module works using BAdI BBP_F4_READ_ON_ENTRY and BBP_F4_READ_ON_EXIT.
BBP_UPD_<data element>_FAV
Updates the favorites in internal function group storage. You can influence how this module works using BAdI BBP_F4_MEM_UPDATE.
BBP_SET_<data element>_FAV
Writes the current favorites to the database. You can influence how this module behaves using BAdI BBP_F4_SAV_DB.
Use
Only implement this BAdI and only program the appropriate method if you want to restrict or augment the value set of standard selection.
If you determine favorites using a BAdI, the standard modules do not process the favorites further. Warning: If, deviating from standard selection, you determine the list of favorites yourself using a BAdI, you have to temporarily store the favorites in the methods of the BAdIs and carry out final saving to the database yourself.
Standard settings
If data is added via the methods, no check of this data occurs. The check has to occur in the methods themselves.
The interfaces of the methods of the BAdI are (almost) always the same:
IV_LANGUAGE
Language for determination of the texts
IV_USER
User for which the values are requested
ET_<data element>_LIST
The list of valid values changed by you
EV_X_FAV_PROCESSED
Use "X" to stipulate that you have filled the favorites list. Only present if favorites table exists for relevant data element.
ET_<data element>_FAVOURITES
Changed favorites list for user IV_USER. Only exists if favorites table exists for relevant data element.
The methods have to fill the structures of the transfer tables completely. Incompletely filled structures can cause followup errors and unforseen consequences.
Activities
Reading of value lists and favorites using function module BBP_GET_<data element>_F4 occurs as follows:
1. First the BAdI BBP_F4_READ_ON_ENTRY is called. It is possible to fill the input list (and favorites) with default values.
a) In the case of default values, exactly these values are returned to the initiator. No further processing or check occurs and the module is exited.
b) If no default values exist, the standard selection is carried out.
2. Before the values are transferred externally you can restrict or augment the number of hits using the BAdI BBP_F4_READ_ON_EXIT. You can therefore delete entries from or add entries to the input list or favorites list.
3. BAdI BBP_F4_READ_ON_EXIT provides an individual method for each data element for which an input help and/or favorites table exists. These are listed below.
If you use this method, you need to indicate processing using the parameter EV_X_LIST_PROCESSED or EV_X_FAV_PROCESSED. Otherwise the selection is lost.
List of available methods per data element in BBP_F4_READ_ON_EXIT:
Field/Data element Method
Currency GET_CURRENCY
Region GET_REGION
Country GET_COUNTRY
Language GET_LANGUAGE
Industry GET_INDUSTRY
Academic title GET_ACADEMIC
Time zones GET_TIMEZONE
Procurement cards GET_PCARD
Legal forms GET_LEGAL
Format for name format GET_NAMEFORM
Quality management systems GET_QMSYSTEM
Fixed values GET_DOMVALUE
Form of address texts GET_TITLEKEY
Units of measure GET_UNIT
Bank data GET_BANKINFO
Tax number types GET_TAXNUMT
Tax numbers per country GET_TAXTYPE
Tax groups per tax type GET_TAXGROUP
Terms of payment GET_PAYMTERM
RFC destinations GET_RFC_LOGS
Logical systems GET_LOGSYS
Tax codes GET_TAXCODE
Catalogs (attribute CAT) GET_CATALOG
Roles (attribute ROLE) GET_ROLE
Account assignment categories (attribute KNT) GET_KNT_ATTR
Purchasing organizations (from PdOrg) GET_PURCHORG
Purchasing organizations (per company) GET_PORGCOMP
Purchasing group (from PdOrg) GET_PURCHGRP
Purchasing group (per company) GET_PGRPCOMP
Product category (attr. WGR, PRCAT) GET_CATEGORY
Products GET_PRODUCT
Goods recipient plant (attr. REQUESTER) GET_GRCPLANT
Goods recipient user (attr. REQUESTER) GET_GRCUSER
Requester (attribute REQUESTER) GET_BOBUSER
Cost centers (attribute CNT) GET_COSTCENT
Asset classes (attribute ANK) GET_ASSETCL
Assets (attribute AN1) GET_ASSETNO
Asset subnumbers (attribute AN2) ET_ASSETSUB
Network (attribute NET) GET_NETWORK
WBS element (attribute PRO) GET_WBSELEM
Order (attribute ANR) GET_ORDERNO
Customer order (attribute AUN) GET_SDDOC
Customer order item (attribute APO) GET_SDDOCPOS
Document type (attribute BSA) GET_DOCTYPE
Transaction type (attribute TEND_TYPE) GET_TENDTYPE
Incase you face any problems, do let me know.
Hope this will help.
Please reward suitable points.
Regards
- Atul

Query result shows the same data twice

Hello All,
I've created UDFs like Supplier Name, Supplier Address, and (Excise Details like)Supplier ECC No,
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