General Bug Report: prefix stringsearch doesn't return results

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Josef Moser
Your email address : jmoser(at)iicm(dot)edu

Category : runtime: back-end: SQL
Severity : serious

Summary: prefix stringsearch doesn't return results

System Configuration
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Operating System : Linux 2.2.7 SUSE6.0; OSF1 V4.0 564 alpha

PostgreSQL version : snapshot from: ftp.postgresql.org (May 28 03:06) and (May 26 03:06)

Compiler used : Linux: egcs-2.91.60 ; dec: cc (Digital UNIX Compiler Driver 3.11)

Hardware:
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Pentium II (Deschutes), 512 MB Ram: Linux xfind 2.2.7 #4 SMP Tue May 4 14:21:58 MEST 1999 i686 unknown and
DEC ALPHA 248MB Ram : OSF1 www V4.0 564 alpha

Versions of other tools:
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linux:GNU Make version 3.76.1, flex version 2.5.4
dec:GNU Make version 3.74 ,flex version 2.5.4

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Problem Description:
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the command SELECT * FROM test_t WHERE word LIKE 'hello%';
returns no results even when there are some hellos in the
database.

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Test Case:
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CREATE TABLE bug_t(word TEXT);
INSERT INTO bug_t VALUES('hello1');
INSERT INTO bug_t VALUES('hello2');
SELECT * FROM bug_t where word like 'hello%';
-- returns 0 results.....
SELECT * FROM bug_t where word like '%hello%';
-- returns 2 results

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Solution:
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