expression: add integration test for JDBC's SHOW VARIABLES (pingcap#2…

…4834)

planner: fix subquery update with generated column (pingcap#23955) (p…

…ingcap#24658)

executor: fix `show table status` for the database with upper-cased n…

…ame (pingcap#23896)

Revert "planner: donot prune all columns for Projection (pingcap#24024)…

… (pingcap#24093)" (pingcap#24202)

metrics: update the PD role expr in Overview Grafana (pingcap#23863) (p…

…ingcap#23875)

executor: fix wrong key range of index scan when filter is comparing …

…year column with NULL (pingcap#23079) (pingcap#23104)

planner: fix {index,hash,merge} join on range suffix condition cluste…

…red index (pingcap#23294) (pingcap#23356)

planner, executor: reset NotNullFlag when merge schema for join (ping…

…cap#22955) (pingcap#22958)

session: fix the duplicate binding case when updating bind info (ping…

…cap#22367) (pingcap#22368)

Signed-off-by: ti-srebot <[email protected]>