Adding the new version function to the install scripts and adding documentation

Author: JesperWisborgKrogh

NEWS.md

@@ -29,6 +29,9 @@
 * Added a new `ps_thread_trx_info()` stored function which outputs, for a given thread id, the transactions, and statements that those transactions have executed, as a JSON object
 * Added new `list_add()` and `list_drop()` stored functions, that take a string csv list, and either add or remove items from that list respectively. Can be used to easily update variables that take such lists, like `sql_mode`.
 * The `ps_thread_id` stored function now returns the thread id for the current connection if NULL is passed for the in_connection_id parameter
+* Added a new `version_major()` stored function, which returns the major version of MySQL Server
+* Added a new `version_minor()` stored function, which returns the miner (release series) version of MySQL Server
+* Added a new `version_patch()` stored function, which returns the patch release version of MySQL Server
 
 ### Bug Fixes
 

README.md

@@ -4086,6 +4086,69 @@ IF (@sys.statement_truncate_len IS NULL) THEN
 END IF;
 ```
 
+#### version_major
+
+##### Description
+
+Returns the major version of MySQL Server.
+
+##### Returns
+
+TINYINT UNSIGNED
+
+##### Example
+```SQL
+mysql> SELECT VERSION(), sys.version_major();
++--------------------------------------+---------------------+
+| VERSION()                            | sys.version_major() |
++--------------------------------------+---------------------+
+| 5.7.9-enterprise-commercial-advanced | 5                   |
++--------------------------------------+---------------------+
+1 row in set (0.00 sec)
+```
+
+#### version_minor
+
+##### Description
+
+Returns the minor (release series) version of MySQL Server.
+
+##### Returns
+
+TINYINT UNSIGNED
+
+##### Example
+```SQL
+mysql> SELECT VERSION(), sys.server_minor();
++--------------------------------------+---------------------+
+| VERSION()                            | sys.version_minor() |
++--------------------------------------+---------------------+
+| 5.7.9-enterprise-commercial-advanced | 7                   |
++--------------------------------------+---------------------+
+1 row in set (0.00 sec)
+```
+
+#### version_patch
+
+##### Description
+
+Returns the patch release version of MySQL Server.
+
+##### Returns
+
+TINYINT UNSIGNED
+
+##### Example
+```SQL
+mysql> SELECT VERSION(), sys.version_patch();
++--------------------------------------+---------------------+
+| VERSION()                            | sys.version_patch() |
++--------------------------------------+---------------------+
+| 5.7.9-enterprise-commercial-advanced | 9                   |
++--------------------------------------+---------------------+
+1 row in set (0.00 sec)
+```
+
 
 ### Procedures
 

sys_56.sql

@@ -38,6 +38,9 @@ SOURCE ./functions/ps_thread_id.sql
 SOURCE ./functions/ps_thread_account.sql
 SOURCE ./functions/ps_thread_stack.sql
 SOURCE ./functions/sys_get_config.sql
+SOURCE ./functions/version_major.sql
+SOURCE ./functions/version_minor.sql
+SOURCE ./functions/version_patch.sql
 
 SOURCE ./views/i_s/innodb_buffer_stats_by_schema.sql
 SOURCE ./views/i_s/x_innodb_buffer_stats_by_schema.sql

sys_57.sql

@@ -39,6 +39,9 @@ SOURCE ./functions/ps_thread_account.sql
 SOURCE ./functions/ps_thread_stack.sql
 SOURCE ./functions/ps_thread_trx_info.sql
 SOURCE ./functions/sys_get_config.sql
+SOURCE ./functions/version_major.sql
+SOURCE ./functions/version_minor.sql
+SOURCE ./functions/version_patch.sql
 
 SOURCE ./views/i_s/innodb_buffer_stats_by_schema.sql
 SOURCE ./views/i_s/x_innodb_buffer_stats_by_schema.sql