我有一个带有2个唯一查询的MySql慢查询日志。但是pt-query-digest仅显示1个唯一查询，并且查询总数包括这两个查询。
我已从日志中删除了一些数据。替换为“” MySql慢日志：
Time Id Command Argument
# Time: 191005 18:22:54
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 18
# Query_time: 17.970162 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
use <empty>;
SET timestamp=1570296174;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191005 18:23:32
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 18
# Query_time: 37.812570 Lock_time: 0.000000 Rows_sent: 654896 Rows_examined: 654896
SET timestamp=1570296212;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191005 22:24:35
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 19
# Query_time: 16.641931 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570310675;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191005 22:25:12
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 19
# Query_time: 36.510373 Lock_time: 0.000000 Rows_sent: 654886 Rows_examined: 654886
SET timestamp=1570310712;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 2:26:11
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 20
# Query_time: 16.360659 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570325171;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 2:26:45
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 20
# Query_time: 33.732895 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570325205;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 4:00:22
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 21
# Query_time: 17.319935 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570330822;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 4:00:57
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 21
# Query_time: 35.099691 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570330857;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 6:27:42
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 22
# Query_time: 16.641898 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570339662;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 6:28:18
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 22
# Query_time: 35.899780 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570339698;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 10:29:15
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 23
# Query_time: 16.454418 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570354155;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 10:29:48
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 23
# Query_time: 33.060434 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570354188;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 14:30:45
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 24
# Query_time: 17.623352 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570368645;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 14:31:18
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 24
# Query_time: 32.930131 Lock_time: 0.000000 Rows_sent: 654886 Rows_examined: 654886
SET timestamp=1570368678;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 18:32:18
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 25
# Query_time: 17.655080 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570383138;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 18:32:51
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 25
# Query_time: 32.290264 Lock_time: 0.000000 Rows_sent: 654886 Rows_examined: 654886
SET timestamp=1570383171;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191006 22:33:50
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 26
# Query_time: 17.115810 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570397630;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191006 22:34:28
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 26
# Query_time: 37.722819 Lock_time: 0.000000 Rows_sent: 654886 Rows_examined: 654886
SET timestamp=1570397668;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191007 2:35:23
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 27
# Query_time: 17.550030 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570412123;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191007 2:35:58
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 27
# Query_time: 35.257635 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570412158;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191007 4:00:20
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 28
# Query_time: 17.907653 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570417220;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191007 4:00:52
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 28
# Query_time: 31.942954 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570417252;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
# Time: 191007 6:36:45
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 29
# Query_time: 17.268767 Lock_time: 0.000000 Rows_sent: 1928145 Rows_examined: 1928145
SET timestamp=1570426605;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `log`;
# Time: 191007 6:37:21
# User@Host: <empty>[<empty>] @ localhost [::1] Id: 29
# Query_time: 35.262304 Lock_time: 0.000000 Rows_sent: 654912 Rows_examined: 654912
SET timestamp=1570426641;
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`;
pt-query-digest --limit = 100％mysql-slow.log的输出
# 150ms user time, 70ms system time, 32.44M rss, 50.93M vsz
# Current date: Mon Oct 7 12:21:00 2019
# Hostname: <empty>
# Files: mysql-slow.log
# Overall: 24 total, 1 unique, 0.00 QPS, 0.00x concurrency _______________
# Time range: 2019-10-05 18:22:54 to 2019-10-07 06:37:21
# Attribute total min max avg 95% stddev median
# ============ ======= ======= ======= ======= ======= ======= =======
# Exec time 624s 16s 38s 26s 35s 9s 32s
# Lock time 0 0 0 0 0 0 0
# Rows sent 29.56M 639.54k 1.84M 1.23M 1.77M 596.48k 1.77M
# Rows examine 29.56M 639.54k 1.84M 1.23M 1.77M 596.48k 1.77M
# Query size 1.07k 44 47 45.50 46.83 1.50 46.83
# Profile
# Rank Query ID Response time Calls R/Call V/
# ==== ================================== =============== ===== ======= ==
# 1 0xE3C753C2F267B2D767A347A2812914DF 624.0315 100.0% 24 26.0013 2.94 SELECT region
# Query 1: 0.00 QPS, 0.00x concurrency, ID 0xE3C753C2F267B2D767A347A2812914DF at byte 446
# This item is included in the report because it matches --limit.
# Scores: V/M = 2.94
# Time range: 2019-10-05 18:22:54 to 2019-10-07 06:37:21
# Attribute pct total min max avg 95% stddev median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count 100 24
# Exec time 100 624s 16s 38s 26s 35s 9s 32s
# Lock time 0 0 0 0 0 0 0 0
# Rows sent 100 29.56M 639.54k 1.84M 1.23M 1.77M 596.48k 1.77M
# Rows examine 100 29.56M 639.54k 1.84M 1.23M 1.77M 596.48k 1.77M
# Query size 100 1.07k 44 47 45.50 46.83 1.50 46.83
# String:
# Databases <empty>
# Hosts localhost
# Users <empty>
# Query_time distribution
# 1us
# 10us
# 100us
# 1ms
# 10ms
# 100ms
# 1s
# 10s+ ################################################################
# Tables
# SHOW TABLE STATUS FROM `<empty>` LIKE 'region'\G
# SHOW CREATE TABLE `<empty>`.`region`\G
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`\G
# Converted for EXPLAIN
# EXPLAIN /*!50100 PARTITIONS*/
SELECT /*!40001 SQL_NO_CACHE */ * FROM `region`\G
为什么pt-query-digest仅显示一个唯一查询？