[
https://issues.apache.org/jira/browse/IMPALA-14731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Balazs Hevele updated IMPALA-14731:
-----------------------------------
Description:
As an example, LIKE "%abc\%" matches for any string containing "abc\", instead
of "abc%" with any prefix.
A very similar bug was fixed in
https://issues.apache.org/jira/browse/IMPALA-2422 which fixes similar cases
without the % at the start, e.g. "abc\%".
Example queries:
1.
{noformat}
+----------------------+
| 'abc%' like '%abc\%' |
+----------------------+
| false | (should be true)
+----------------------+
{noformat}
2.
{noformat}
+-----------------------+
| 'abc\\' like '%abc\%' |
+-----------------------+
| true | (should be false)
+-----------------------+
{noformat}
was:
As an example, LIKE "%abc\%" matches for any string containing "abc\", instead
of "abc%" with any prefix.
A very similar bug was fixed in
https://issues.apache.org/jira/browse/IMPALA-2422 which fixes similar cases
without the % at the start, e.g. "abc\%".
Example queries:
1.
+----------------------+
| 'abc%' like '%abc\%' |
+----------------------+
| false | (should be true)
+----------------------+
2.
+-----------------------+
| 'abc\\' like '%abc\%' |
+-----------------------+
| true | (should be false)
+-----------------------+
> LIKE starting with % and ending with escaped % does not work correctly
> ----------------------------------------------------------------------
>
> Key: IMPALA-14731
> URL: https://issues.apache.org/jira/browse/IMPALA-14731
> Project: IMPALA
> Issue Type: Bug
> Reporter: Balazs Hevele
> Assignee: Balazs Hevele
> Priority: Critical
> Labels: Correctness
>
> As an example, LIKE "%abc\%" matches for any string containing "abc\",
> instead of "abc%" with any prefix.
> A very similar bug was fixed in
> https://issues.apache.org/jira/browse/IMPALA-2422 which fixes similar cases
> without the % at the start, e.g. "abc\%".
> Example queries:
> 1.
> {noformat}
> +----------------------+
> | 'abc%' like '%abc\%' |
> +----------------------+
> | false | (should be true)
> +----------------------+
> {noformat}
> 2.
> {noformat}
> +-----------------------+
> | 'abc\\' like '%abc\%' |
> +-----------------------+
> | true | (should be false)
> +-----------------------+
> {noformat}
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