Update sqlfluff descriptor to enable error count (#1462)

* Adding regex to sqlfluff descriptor to enable proper error count

* Fixing broken escape character

* Update sql.megalinter-descriptor.yml

* Add a second bad test case to verify count regex

Co-authored-by: Nicolas Vuillamy <nicolas.vuillamy@gmail.com>

.automation/test/sql/sql_bad_2.sql

@@ -0,0 +1 @@
+DELETE from person;

CHANGELOG.md

@@ -61,6 +61,9 @@ Note: Can be used with `megalinter/megalinter@beta` in your GitHub Action mega-l
   - [graphql-schema-linter](https://github.com/cjoudrey/graphql-schema-linter) from 2.0.2 to **3.0.0** on 2022-05-07
 <!-- linter-versions-end -->
 
+- Flavors
+  - Update sqlfluff descriptor properties to enable error count([#1460](https://github.com/megalinter/megalinter/issues/1460))
+
 ## [v5.12.0] - 2022-04-23
 
 - Core

megalinter/descriptors/sql.megalinter-descriptor.yml

@@ -34,6 +34,8 @@ linters:
     active_only_if_file_found:
       - .sqlfluff
     cli_lint_mode: list_of_files
+    cli_lint_errors_count: regex_count
+    cli_lint_errors_regex: "L:(.*)P:(.*)"
     cli_lint_extra_args:
       - lint
     cli_config_arg_name: "--config"