ZhangYu0123 opened a new pull request, #20290:
URL: https://github.com/apache/doris/pull/20290
## Proposed changes
Optimize locate function by compare across strings.
before:
MySQL [clickbench]> select sum(c) from (select case when locate('google',
url) then 1 else 0 end c from hits) c;
+----------+
| sum(c) |
+----------+
| 1278 |
+----------+
1 row in set (1.04 sec)
after:
MySQL [clickbench]> select sum(c) from (select case when locate('google',
url) then 1 else 0 end c from hits) c;
+----------+
| sum(c) |
+----------+
| 1278 |
+----------+
1 row in set (0.55 sec)
Issue Number: close #xxx
<--Describe your changes.-->
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