How to compare two columns ignoring Case (Upper or Lower case)

Comments

• [Deleted User]

  August 2013

  Hi Shibashis, Vertica supports Unicode (ie., non-English) strings; as a result, there are actually multiple ways to do a case-insensitive comparison. Take a look at database locales; specifically the 'collation' option: https://my.vertica.com/docs/6.1.x/HTML/index.htm#13786.htm https://my.vertica.com/docs/6.1.x/HTML/index.htm#14070.htm I suspect one (or more) of these will suit your needs. Adam

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• Daniel_Leybovic

  August 2013

  Hi! You can use in ILIKE: daniel=> select 'Shiba' ilike 'SHIBA'; ?column? ---------- t (1 row) daniel=> select 'Vertica' ~~* 'VerTicA'; ?column? ---------- t (1 row)

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• Shibashis_Beher

  August 2013

  I have many cases in where condition and i do not want to use UPPER or ilike clause in each and every comparison. i want to know if we can alter any session parameter that will by default compare all fields ignoring cases in that session?

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• [Deleted User]

  August 2013

  Hi Shibashis, I pointed you at the relevant parameters in my previous post; are they working well for you? Thanks, Adam

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• Sharon_Cutter ✭✭

  August 2013

  Consider fixing your data so that all data is consistently in the same case. Having to uppercase strings in order to do comparisons will only waste cpu and possibly decrease the effectiveness of encoding and compression. Vertica's sweet spot is fast queries - don't degrade the performance with your data model.

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• Nicholas_Chamma_1

  October 2013

  Hey Adam, Would setting colStrength = secondary cover Shibashis's original use case? Nick

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