tidb按这个查
SELECT
db_name,
table_name,
ROUND(SUM(total_size / cnt), 2) Approximate_Size,
ROUND(SUM(total_size / cnt / (SELECT
ROUND(AVG(VALUE), 2)
FROM
METRICS_SCHEMA.store_size_amplification
WHERE
VALUE > 0)),
2) Disk_Size
FROM
(SELECT
db_name,
table_name,
region_id,
SUM(Approximate_Size) total_size,
COUNT(*) cnt
FROM
information_schema.TIKV_REGION_STATUS
WHERE
db_name = ‘sbtest’
AND table_name IN (‘sbtest1’)
GROUP BY db_name , table_name , region_id) tabinfo
GROUP BY db_name , table_name;