Sql Like statement is not working with numbers and special characters

[HabooshHaddad]

What is the bug? sql jdbc is not working with Like operator when the value contains numbers or special characters.

How can one reproduce the bug? Steps to reproduce the behavior:

1. Create an index with field of type text
2. Fill the field with json data for example and make sure the values contains a mix of numbers and special characters ( ex. Jordan1234{a:a} )
3. Run the below sql statement

   select id  
   from index_name
   where data LIKE 'Jordan1%'

4. Notice that no data is retrieved
5. In case I run the below statement

   select id  
   from index_name
   where data LIKE 'Jordan%'

6. I will be getting the desired result and the item is retrieved

What is the expected behavior? When running the first sql statament, data should be retrieved

[Yury-Fridlyand]

Hi What is the mapping for the field you're using in the LIKE statement? How big it that index?

[HabooshHaddad]

Hello Yury, The field mapping is a "Text", and the index is 10 Million records

[HabooshHaddad]

Here is a clearer example I created the below index :

PUT sql_like
{
  "settings": {
    "analysis": {
      "analyzer": {
        "data_analyzer": {
          "type": "pattern",
          "pattern": "\\W+|(?<=\\D)(?=\\d)|(?<=\\d)(?=\\D)",
          "lowercase": true
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "field1": {
        "type": "text",
        "analyzer": "data_analyzer"
      }
    }
  }
}

POST sql_like/_doc
{
    "field1": "test1 test2 test3"
}

The below sql will not retrieve data

select id  
from index_name
where data LIKE 'test1%'

whille this sql will retrieve the item

select id  
from index_name
where data LIKE 'test%'

When adding an index without the data analyzer both queries works well, but I need the analyzer.

[Yury-Fridlyand]

Thanks for sharing infor @HabooshHaddad. I'm moving the bug to the right place.

[chemeng]

Are there any updates on this one?

[LantaoJin]

This is not an issue of SQL plugin. It doesn't work via DSL either:

GET sql_like/_search
{
  "query": {
    "wildcard": {
      "field1": {
        "value": "test1*",
        "case_insensitive": true
      }
    }
  }
}

But I think it is relevant to the pattern your analyzer set. If we change \\W+ to \\W*, select id from index_name where data LIKE 'test%' won't work either. So I think the issue could be moved to OpenSearch Core.