--source include/have_innodb.inc

# BUG#13684: 
#   SP: DROP PROCEDURE|FUNCTION IF EXISTS not binlogged if routine 
#   does not exist
#   
#   There is an inconsistency with DROP DATABASE IF EXISTS, DROP
#   TABLE IF EXISTS and DROP VIEW IF EXISTS: those are binlogged even
#   if the DB or TABLE does not exist, whereas DROP PROCEDURE IF
#   EXISTS does not. It would be nice or at least consistent if DROP
#   PROCEDURE/STATEMENT worked the same too.
#
# Description: 
#   DROP PROCEDURE|FUNCTION IF EXISTS does not get binlogged whereas DROP
#   DATABASE|TABLE|TRIGGER|... IF EXISTS do.
#
#   Fixed DROP PROCEDURE|FUNCTION IF EXISTS by adding a call to
#   write_bin_log in mysql_execute_command. Checked also if all
#   documented "DROP (...) IF EXISTS" get binlogged. Left out DROP
#   SERVER IF EXISTS because it seems that it only gets binlogged when
#   using row event (see BUG#25705).
#
#   TODO: add DROP SERVER IF EXISTS to the test case when its
#   binlogging procedure gets fixed (BUG#25705). Furthermore, when
#   logging in RBR format the events that get logged are effectively in
#   RBR format and not in STATEMENT format meaning that one must needs
#   to be extra careful when writing a test for it, or change the CREATE
#   SERVER logging to always log as STATEMENT. You can quickly check this
#   by enabling the flag below $fixed_bug_25705=1 and watch the diff on
#   the STDOUT. More detail may be found on the generated reject file.
#   
#   Test is implemented as follows:
#
#       i) test each "drop if exists" (DDL), found in MySQL 5.1 manual, 
#          on inexistent objects (except for DROP SERVER);
#      ii) show binlog events;
#     iii) create an object for each drop if exists statement;
#      iv) issue "drop if exists" in existent objects.
#       v) show binlog events;
#
# References:
#  http://dev.mysql.com/doc/refman/5.1/en/sql-syntax-data-definition.html
#
--source include/have_log_bin.inc
RESET MASTER;

disable_warnings;

# test all "drop if exists" in manual with inexistent objects
DROP PROCEDURE IF EXISTS db_bug_13684.p;
DROP FUNCTION IF EXISTS db_bug_13684.f;
DROP TRIGGER IF EXISTS db_bug_13684.tr;
DROP VIEW IF EXISTS db_bug_13684.v;
DROP EVENT IF EXISTS db_bug_13684.e;
DROP TABLE IF EXISTS db_bug_13684.t;
DROP DATABASE IF EXISTS db_bug_13684;

let $fixed_bug_25705 = 0;

if($fixed_bug_25705)
{
  DROP SERVER IF EXISTS s_bug_13684;
}
--source include/show_binlog_events.inc

# test drop with existing values

# create 
CREATE DATABASE db_bug_13684;

CREATE TABLE db_bug_13684.t (a int);

CREATE EVENT db_bug_13684.e
  ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 HOUR
  DO
    UPDATE db_bug_13684.t SET a = a + 1;

CREATE VIEW db_bug_13684.v 
  AS SELECT * FROM db_bug_13684.t;

CREATE TRIGGER db_bug_13684.tr BEFORE INSERT ON db_bug_13684.t
  FOR EACH ROW BEGIN
  END;

CREATE PROCEDURE db_bug_13684.p (OUT p1 INT)
  BEGIN
  END;

CREATE FUNCTION db_bug_13684.f (s CHAR(20))
  RETURNS CHAR(50) DETERMINISTIC
  RETURN s;

if($fixed_bug_25705)
{
  CREATE SERVER s_bug_13684
    FOREIGN DATA WRAPPER mysql
    OPTIONS (USER 'Remote', HOST '192.168.1.106', DATABASE 'test');
}

--source include/show_binlog_events.inc

# drop existing 
DROP PROCEDURE IF EXISTS db_bug_13684.p;
DROP FUNCTION IF EXISTS db_bug_13684.f;
DROP TRIGGER IF EXISTS db_bug_13684.tr;
DROP VIEW IF EXISTS db_bug_13684.v;
DROP EVENT IF EXISTS db_bug_13684.e;
DROP TABLE IF EXISTS db_bug_13684.t;
DROP DATABASE IF EXISTS db_bug_13684;
if($fixed_bug_25705)
{
  DROP SERVER IF EXISTS s_bug_13684;
}

--source include/show_binlog_events.inc

enable_warnings;

# Drop comments in binlog
let $binlog_start= query_get_value(SHOW MASTER STATUS, Position, 1);
CREATE TABLE t1(id int);
DROP TABLE /* comment */ t1;
CREATE TABLE t1(id int);
DROP TABLE IF EXISTS /* comment */ t1;

CREATE TABLE t1(id int);
DROP TABLE /**/ t1;
CREATE TABLE t1(id int);
DROP TABLE IF EXISTS /* */ t1;

--source include/show_binlog_events.inc

--echo #
--echo # MDEV-22820 Bogus "Unknown table" warnings produced upon attempt to
--echo #            drop parent table referenced by FK
--echo #

let $binlog_start= query_get_value(SHOW MASTER STATUS, Position, 1);

create table t1 (a int, key(a)) engine=InnoDB;
create table t2 (b int, foreign key(b) references t1(a)) engine=InnoDB;
--error ER_ROW_IS_REFERENCED_2
drop table if exists t1;
--error ER_ROW_IS_REFERENCED_2
drop table if exists t1,t0;
show warnings;
drop table t2,t1;

create table t3 (a int) engine=aria;

# This is not logged
--error ER_BAD_TABLE_ERROR
drop table t10,t20;
# This is logged
--error ER_BAD_TABLE_ERROR
drop table t10,t20,t3;

# These are both logged
drop table if exists t10,t20;
drop table if exists t10,t20,t3;

--source include/show_binlog_events.inc