Update comments and changelog.

Author: jverswijver

CHANGELOG.md

@@ -5,7 +5,7 @@
 * Bugfix - Replace use of numpy aliases of built-in types with built-in type. (#938) PR #939
 * Bugfix - `ExternalTable.delete` should not remove row on error (#953) PR #956
 * Bugfix - Fix error handling of remove_object function in `s3.py` (#952) PR #955
-* Bugfix - Fix sql code generation to comply with sql mode ONLY_FULL_GROUP_BY (#916) PR #965
+* Bugfix - Fix sql code generation to comply with sql mode `ONLY_FULL_GROUP_BY` (#916) PR #965
 
 ### 0.13.2 -- May 7, 2021
 * Update `setuptools_certificate` dependency to new name `otumat`

docs-parts/intro/Releases_lang1.rst

@@ -4,7 +4,7 @@
 * Bugfix - Replace use of numpy aliases of built-in types with built-in type. (#938) PR #939
 * Bugfix - `ExternalTable.delete` should not remove row on error (#953) PR #956
 * Bugfix - Fix error handling of remove_object function in `s3.py` (#952) PR #955
-* Bugfix - Fix sql code generation to comply with sql mode ONLY_FULL_GROUP_BY (#916) PR #965
+* Bugfix - Fix sql code generation to comply with sql mode ``ONLY_FULL_GROUP_BY`` (#916) PR #965
 
 0.13.2 -- May 7, 2021
 ----------------------

tests/test_groupby.py

@@ -3,4 +3,8 @@
 
 def test_aggr_with_proj():
     # issue #944 - only breaks with MariaDB
+    # Maria db wants all the fields in the select statement to be in the group by 
+    # even if the fields are in fuctional dependency, this is incorrect and MySQL 
+    # implements this properly
+    # More info on the issue page
     A.aggr(D.proj(m='id_l'), ..., n='max(m) - min(m)')