MySQL 8 error on subselect parenthesis |
Hi,
I upgraded the database from MySQL 5.7 to 8.0 and now we have some query generated by CI query builder that can't be executed. For example: Code: $this->db->from("(SELECT col1 FROM table) AS alias"); generates this query: Code: SELECT ... FROM ((SELECT col1 FROM table) AS alias) And it worked with 5.7 but 8.0 doesn't like the exterior parenthesis. The query needs to be: Code: SELECT ... FROM (SELECT col1 FROM table) AS alias What can I do? Thx
I haven't tried it, but first thing that pops in mind is, if you are not using Query Builder functionality, maybe try
PHP Code: $result = $this->db->query("(SELECT col1 FROM table) AS alias"); This should run the SQL query text as is.
I use the query builder functionality, I simplified the example but the query is more complex and use ->select(), ->where(), ... If there's no other way I won't use the query builder but it's helps me to simplify the query construction.
@dimas,
Have you tried it this way (https://codeigniter.com/user_guide/datab...y-bindings) it allows you to write more complex queries. Here is an example complex query that I wrote for another thread... https://forum.codeigniter.com/thread-708...#pid354392 |
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