suneet-s commented on a change in pull request #10350:
URL: https://github.com/apache/druid/pull/10350#discussion_r486074700



##########
File path: docs/querying/sql.md
##########
@@ -561,6 +561,8 @@ The [DataSketches 
extension](../development/extensions-core/datasketches-extensi
 |`COALESCE(value1, value2, ...)`|Returns the first value that is neither NULL 
nor empty string.|
 |`NVL(expr,expr-for-null)`|Returns 'expr-for-null' if 'expr' is null (or empty 
string for string type).|
 |`BLOOM_FILTER_TEST(<expr>, <serialized-filter>)`|Returns true if the value is 
contained in a Base64-serialized bloom filter. See the [Bloom filter 
extension](../development/extensions-core/bloom-filter.html) documentation for 
additional details.|
+|`CONTAINS_STR(<expr>, str)`|Returns true if the `str` is a substring of 
`expr`.|
+|`ICONTAINS_STR(<expr>, str)`|Returns true if the `str` is a substring of 
`expr`. The match is case-insensitive.|

Review comment:
       OK thinking about this some more, I think I like the idea of one 
function name more since it maps to the `SearchQuerySpec`. Then, over time, 
this function can become smarter and support the different types of search 
query specs, so if a user passes in a list of values, it knows to use the 
`FragmentSearchQuerySpec` and if they pass in some other flag, it knows to use 
the `RegexSearchQuerySpec` 




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