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ravikumar15
New User
Joined: 27 Mar 2006
Posts: 68
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| I am using SEARCH ALL in one of my program. For SEARCH ALL, the data should be in Ascending or decending order. I just want to know, if we dont sort the data, will we get any error or the SEARCH ALL does not function properly. |
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dnreddy
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Joined: 08 Dec 2006
Posts: 8
Location: chennai
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Hi ravi
SEARCH - is a serial search.
SEARCH ALL - is a binary search & the table must be sorted ( ASCENDING/DESCENDING KEY clause to be used & data loaded in this order) before using SEARCH ALL.
What should be the sorting order for SEARCH ALL
It can be either ASCENDING or DESCENDING. ASCENDING is default. If you want the search to be done on an array sorted in descending order, then while defining the array, you should give DESCENDING KEY clause. (You must load the table in the specified order).
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ravikumar15
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Joined: 27 Mar 2006
Posts: 68
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| I know that. My question is, suppose if the data is not sorted, will we get error. |
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William Thompson
Global Moderator
Joined: 18 Nov 2006
Posts: 3156
Location: Tucson AZ
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From the Language Reference
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The results of a SEARCH ALL operation are predictable only when:
v The data in the table is ordered in ASCENDING/DESCENDING KEY order
v The contents of the ASCENDING/DESCENDING keys specified in the WHEN clause provide a unique table reference. |
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hello,
Follow the Search rules or possibly get invalid results - it may not actually fail, just give the wrong result. There is no suppose the data is not sorted. |
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