
# Profile
# Rank Query ID                           Response time Calls R/Call V/M  
# ==== ================================== ============= ===== ====== =====
#    1 0x867E8F0D95B72228D4B6A5CD2F2F485C 0.2148 100.0%     1 0.2148  0.00 SELECT t

# Query 1: 0 QPS, 0x concurrency, ID 0x867E8F0D95B72228D4B6A5CD2F2F485C at byte 0
# This item is included in the report because it matches --limit.
# Scores: V/M = 0.00
# Time range: all events occurred at 2010-12-14 16:12:28
# Attribute    pct   total     min     max     avg     95%  stddev  median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count        100       1
# Exec time    100   215ms   215ms   215ms   215ms   215ms       0   215ms
# Lock time     99   162us   162us   162us   162us   162us       0   162us
# Rows sent    100      10      10      10      10      10       0      10
# Rows examine 100   1.96k   1.96k   1.96k   1.96k   1.96k       0   1.96k
# Query size   100      82      82      82      82      82       0      82
# String:
# Databases    issue_1196
# Hosts        localhost
# Users        root
# Query_time distribution
#   1us
#  10us
# 100us
#   1ms
#  10ms
# 100ms  ################################################################
#    1s
#  10s+
# Tables
#    SHOW TABLE STATUS FROM `issue_1196` LIKE 't'\G
#    SHOW CREATE TABLE `issue_1196`.`t`\G
# EXPLAIN /*!50100 PARTITIONS*/
select t.a, count(*) from t join t t2 using(a) group by 1 order by 2 desc limit 10\G
# *************************** 1. row ***************************
#            id: 1
#   select_type: SIMPLE
#         table: t
#    partitions: NULL
#          type: ALL
# possible_keys: NULL
#           key: NULL
#       key_len: NULL
#           ref: NULL
#          rows: 14
#         Extra: Using temporary; Using filesort
# *************************** 2. row ***************************
#            id: 1
#   select_type: SIMPLE
#         table: t2
#    partitions: NULL
#          type: ALL
# possible_keys: NULL
#           key: NULL
#       key_len: NULL
#           ref: NULL
#          rows: 14
#         Extra: Using where; Using join buffer (Block Nested Loop)
