Any Alternative to LIKE operator ?

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i have below query :
i have to select All the records wheixh start from user input
Like User Input : 123

SELECT TBLUSERACTIVITIES.UID_R, TBLUSERACTIVITIES.ACTION, TO_CHAR(TBLUSERACTIVITIES.DATE_R,'MM/DD/YYYY HH24:MI') DATE_R
FROM EAITEMP.TBLUSERACTIVITIES TBLUSERACTIVITIES
WHERE (TBLUSERACTIVITIES.EVENTID1 LIKE '123%') or (TBLUSERACTIVITIES.EVENTID2 LIKE '123%')

To return the records, it taking much of time. So i need to reduce the time by replacing like operator with other logic.

Thanks in Advance

Posted 31-Jan-14 0:28am

Mohd Shamim Ansari

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CPallini · Answer 1 · 2014-01-31T00:45:00

Solution 1

Here some suggestions, for Oracle: "Is substr or LIKE faster in Oracle?" at Stack Overflow[^].

Posted 31-Jan-14 0:45am

CPallini

Comments

Jörgen Andersson 31-Jan-14 7:25am

A function based index of this kind would only work with a specific length of the text. You would need a different index for every length of the search string.

Jörgen Andersson · Answer 2 · 2014-01-31T01:21:00

Solution 3

This is because it will make a full table scan for every query.
You need a text index[^]

Posted 31-Jan-14 1:21am

Jörgen Andersson

DipsMak · Answer 3 · 2014-01-31T00:50:00

Solution 2

Rather than writing multiple LIKE in sql staements you can use N'123%'

Posted 31-Jan-14 0:50am

DipsMak