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[GENERAL] Problem with PostgreSQL string sorting Hello All, - Mailing list pgsql-general

From Hari Sankar A
Subject [GENERAL] Problem with PostgreSQL string sorting Hello All,
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Msg-id CAL1h+Q9ERssy09AML6-Ar5bDrTOp5Ohw9CDDBStN1ySF-XoXXA@mail.gmail.com
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Responses Re: [GENERAL] Problem with PostgreSQL string sorting Hello All,  ("David G. Johnston" <david.g.johnston@gmail.com>)
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Hello All,

I am a Database administrator and we are using PostgreSQL-9.6.1 version in RHEL-7 linux machine. Current server Encoding setup is UTF8 and LC_COLLATE and LC_CTYPE is en_US.UTF-8. 

Lets say table person has field name with values likes

name
------
Abc
abc
.dcb
Dcb
$sdf
EDF

en_US.UTF-8 collate sorting this field as:

name
------
abc
Abc
.dcb
Dcb
EDF
$sdf

It ignore's Special characters.

"C" collate sorting this field as:
name
------
$sdf
.dcb
Abc
Dcb
EDF
abc

It does case sensitive sort.

My expected sorting should be: (Case insensitive and special character) 

name
------
$sdf
.dcb
Abc
abc
Dcb
EDF

I can use lower() and collate 'C' to get this result. But I need a default collate to support this.

Is there any collation that support both (Case insensitive and special character) sorting in utf8?


your help would be really appreciated.


Thanks,
Hari

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