Hash functions

Author: idegtiarenko

docs/reference/esql/functions/description/md5.asciidoc

@@ -43,6 +43,7 @@ include::layout/left.asciidoc[]
 include::layout/length.asciidoc[]
 include::layout/locate.asciidoc[]
 include::layout/ltrim.asciidoc[]
+include::layout/md5.asciidoc[]
 include::layout/repeat.asciidoc[]
 include::layout/replace.asciidoc[]
 include::layout/reverse.asciidoc[]

docs/reference/esql/functions/kibana/definition/md5.json

@@ -103,3 +103,12 @@ FROM sample_data
 count:long | hash(md5, message):keyword
 3          | 2e92ae79ff32b37fee4368a594792183
 ;
+
+md5Hash
+required_capability: short_hash_functions
+
+ROW input="input" | EVAL md5 = hash("md5", input);
+
+input:keyword | md5:keyword
+input         | a43c1b0aa53a0c908810c06ab1ff3967
+;

docs/reference/esql/functions/kibana/docs/md5.md

@@ -453,6 +453,10 @@ public enum Cap {
          * Hash function
          */
         HASH_FUNCTION,
+        /**
+         * Hash functions such as MD5
+         */
+        SHORT_HASH_FUNCTIONS,
 
         /**
          * Don't optimize CASE IS NOT NULL function by not requiring the fields to be not null as well.