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, 2 insertions, 0 deletions

diff --git a/sql/mdl.cc b/sql/mdl.cc
index bf708c945f4..f03fc89fcc1 100644
--- a/sql/mdl.cc
+++ b/sql/mdl.cc
@@ -85,6 +85,7 @@ PSI_stage_info MDL_key::m_namespace_to_wait_state_name[NAMESPACE_END]=
   {0, "Waiting for table metadata lock", 0},
   {0, "Waiting for stored function metadata lock", 0},
   {0, "Waiting for stored procedure metadata lock", 0},
+  {0, "Waiting for stored package body metadata lock", 0},
   {0, "Waiting for trigger metadata lock", 0},
   {0, "Waiting for event metadata lock", 0},
   {0, "Waiting for commit lock", 0},
@@ -3043,6 +3044,7 @@ const char *wsrep_get_mdl_namespace_name(MDL_key::enum_mdl_namespace ns)
   case MDL_key::TABLE     : return "TABLE";
   case MDL_key::FUNCTION  : return "FUNCTION";
   case MDL_key::PROCEDURE : return "PROCEDURE";
+  case MDL_key::PACKAGE_BODY: return "PACKAGE BODY";
   case MDL_key::TRIGGER   : return "TRIGGER";
   case MDL_key::EVENT     : return "EVENT";
   case MDL_key::COMMIT    : return "COMMIT";