MDEV-4911 - add KILL query id, and add query id information to processlist

It is now possible to kill query by query id. KILL syntax was extended to:
KILL [HARD | SOFT] [CONNECTION | QUERY [ID query_id]] [thread_id | USER user_name]

Added QUERY_ID column to INFORMATION_SCHEMA.PROCESSLIST.

Fixed tests affected by this change:
- added PROCESSLIST.QUERY_ID column
- ID is now keyword and is quoted in SHOW CREATE TABLE output
- PFS statement digest is calculated basing on token id
  (not token text). Token id has shifted for keywords residing
  after ID in keywords array.

1 files changed, 12 insertions, 0 deletions

diff --git a/mysql-test/t/kill.test b/mysql-test/t/kill.test
index 7c6c37ecfc6..114a876b052 100644
--- a/mysql-test/t/kill.test
+++ b/mysql-test/t/kill.test
@@ -632,5 +632,17 @@ connection con4;
 select 1;
 connection default;
 
+--echo #
+--echo # MDEV-4911 - add KILL query id, and add query id information to
+--echo #             processlist
+--echo #
+send SELECT SLEEP(1000);
+connection con1;
+let $wait_condition= SELECT @id:=QUERY_ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE INFO='SELECT SLEEP(1000)';
+source include/wait_condition.inc;
+KILL QUERY ID @id;
+connection default;
+reap;
+
 SET DEBUG_SYNC = 'RESET';
 DROP FUNCTION MY_KILL;