MDEV-11952 Oracle-style packages: stage#5mariadb-10.3.5bb-10.3-compatibility

- CREATE PACKAGE [BODY] statements are now
  entirely written to mysql.proc with type='PACKAGE' and type='PACKAGE BODY'.
- CREATE PACKAGE BODY now supports IF NOT EXISTS
- DROP PACKAGE BODY now supports IF EXISTS
- CREATE OR REPLACE PACKAGE [BODY] is now supported
- CREATE PACKAGE [BODY] now support the DEFINER clause:

    CREATE DEFINER user@host PACKAGE pkg ... END;
    CREATE DEFINER user@host PACKAGE BODY pkg ... END;

- CREATE PACKAGE [BODY] now supports SQL SECURITY and COMMENT clauses, e.g.:

    CREATE PACKAGE p1 SQL SECURITY INVOKER COMMENT "comment" AS ... END;

- Package routines are now created from the package CREATE PACKAGE BODY
  statement and don't produce individual records in mysql.proc.

- CREATE PACKAGE BODY now supports package-wide variables.
  Package variables can be read and set inside package routines.
  Package variables are stored in a separate sp_rcontext,
  which is cached in THD on the first packate routine call.

- CREATE PACKAGE BODY now supports the initialization section.

- All public routines (i.e. declared in CREATE PACKAGE)
  must have implementations in CREATE PACKAGE BODY

- Only public package routines are available outside of the package

- {CREATE|DROP} PACKAGE [BODY] now respects CREATE ROUTINE and ALTER ROUTINE
  privileges

- "GRANT EXECUTE ON PACKAGE BODY pkg" is now supported

- SHOW CREATE PACKAGE [BODY] is now supported

- SHOW PACKAGE [BODY] STATUS is now supported

- CREATE and DROP for PACKAGE [BODY] now works for non-current databases

- mysqldump now supports packages

- "SHOW {PROCEDURE|FUNCTION) CODE pkg.routine" now works for package routines

- "SHOW PACKAGE BODY CODE pkg" now works (the package initialization section)

- A new package body level MDL was added

- Recursive calls for package procedures are now possible

- Routine forward declarations in CREATE PACKATE BODY are now supported.

- Package body variables now work as SP OUT parameters

- Package body variables now work as SELECT INTO targets

- Package body variables now support ROW, %ROWTYPE, %TYPE

1 files changed, 13 insertions, 2 deletions

diff --git a/sql/sql_cmd.h b/sql/sql_cmd.h
index d95b1c828b9..1c4c89eb132 100644
--- a/sql/sql_cmd.h
+++ b/sql/sql_cmd.h
@@ -99,6 +99,15 @@ enum enum_sql_command {
   SQLCOM_CREATE_SEQUENCE,
   SQLCOM_DROP_SEQUENCE,
   SQLCOM_ALTER_SEQUENCE,
+  SQLCOM_CREATE_PACKAGE,
+  SQLCOM_DROP_PACKAGE,
+  SQLCOM_CREATE_PACKAGE_BODY,
+  SQLCOM_DROP_PACKAGE_BODY,
+  SQLCOM_SHOW_CREATE_PACKAGE,
+  SQLCOM_SHOW_CREATE_PACKAGE_BODY,
+  SQLCOM_SHOW_STATUS_PACKAGE,
+  SQLCOM_SHOW_STATUS_PACKAGE_BODY,
+  SQLCOM_SHOW_PACKAGE_BODY_CODE,
 
   /*
     When a command is added here, be sure it's also added in mysqld.cc
@@ -175,8 +184,10 @@ class Sql_cmd_call : public Sql_cmd
 {
 public:
   class sp_name *m_name;
-  Sql_cmd_call(class sp_name *name)
-   :m_name(name)
+  const class Sp_handler *m_handler;
+  Sql_cmd_call(class sp_name *name, const class Sp_handler *handler)
+   :m_name(name),
+    m_handler(handler)
   {}
 
   virtual ~Sql_cmd_call()