BUG #1837: varchar/text operator "=" not unicode safe?

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04-10-2008, 09:07 AM

JÃ¶rg Haustein

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BUG #1837: varchar/text operator "=" not unicode safe?

The following bug has been logged online:

Bug reference: 1837
Logged by: JÃ¶rg Haustein
Email address: joerg.haustein@urz.uni-hd.de
PostgreSQL version: 8.0.3
Operating system: Linux (SuSE 9.1)
Description: varchar/text operator "=" not unicode safe?
Details:

I have a UNICODE database, trying to compare two unicode strings (Ethiopic
characters). Client encoding is also UNICODE:

testdb=> select 'á‰*á‹µáˆ© áˆáˆ´áŠ•'='áˆ°á‹*á‰ áŠ¨á‰*á‹°';
?column?
----------
t
(1 row)

Clearly, it can be seen that they are not equal. The "LIKE" operator also
seems to think so:

testdb=> select 'á‰*á‹µáˆ© áˆáˆ´áŠ•' LIKE 'áˆ°á‹*á‰ áŠ¨á‰*á‹°';
?column?
----------
f
(1 row)

What is the problem here?
The behavior is the same with SQL_ASCII databases and the SQL_ASCII client
encoding.

---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match

« BUG #1830: Non-super-user must be able to copy from a file | BUG #1831: plperl gives error after reconnect. »

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BUG #1837: varchar/text operator "=" not unicode safe?