xorm/xorm
xorm/xorm
63
356
Fork 206
Code Issues 371 Pull Requests 18 Actions Releases 35 Activity

求教count(1)是怎么操作可以实现？ #2142

New Issue
Open
opened 2022-05-12 12:41:13 +00:00 by zhjay999 · 0 comments
zhjay999 commented 2022-05-12 12:41:13 +00:00
Copy Link

求教count(1)是怎么操作可以实现？count(*)很慢

求教count(1)是怎么操作可以实现？count(*)很慢
zhjay999 changed title from count(1)这个没有优化吗？count(*)速度很慢呀 to 求教count(1)是怎么操作可以实现？ 2022-05-12 12:44:36 +00:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
v1
lunny/test_extends
lunny/fix_ci2
lunny/oracle_ci
main
lunny/fix_distinct_count
lunny/postgres_for_update
lunny/executors
lunny/dm_ci
lunny/dm_upgrade
v1.3.9
v1.3.8
v1.3.7
v1.3.6
v1.3.4
v1.3.3
v1.3.2
v1.3.1
v1.3.0
v1.2.5
v1.2.4
v1.2.3
v1.2.2
v1.2.1
v1.2.0
v1.1.2
v1.1.1
v1.1.0
v1.0.7
v1.0.6
v1.0.5
v1.0.4
v1.0.3
v1.0.2
v1.0.1
v1.0.0
v0.8.2
v0.8.1
v0.8.0
v0.7.9
v0.7.8
v0.7.7
v0.7.6
v0.7.5
v0.7.4
v0.7.2
v0.7.3
v0.6.1
v0.7.1
v0.6.0
v0.7.0
v0.6.6
v0.6.5
v0.6.4
v0.6.3
v0.6.2
v0.5.8
v0.5.7
v0.5.6
v0.5.4
v0.5.3
v0.5.2
v0.5.1
v0.5.0
v0.4.5
v0.4.4
v0.4.3
v0.4.2
v0.4.1
v0.3.2
v0.3.1
v0.2.3
v0.2.2
v0.2.1
v0.2
Labels
Clear labels   
backport/done

   
backport/v1

   
blocked
  
db
oracle

  
db
sqlserver

  
duplicate
  
feature
cache

  
frontport/done

   
frontport/main

   
invalid
  
kind
breaking

  
kind
bug

  
kind
build

  
kind
dependencies

  
kind
docs

  
kind
driver

  
kind
enhancement

  
kind
feature

  
kind
performance

  
kind
proposal

  
kind
question

  
kind
refactor

  
kind
testing

  
need
feedback

  
need
test

  
proposal:accepted

   
RaspBerry Pi

   
regression

   
skip-changelog

   
upstream

   
wip

   
wontfix
No Label
backport/done
backport/v1
blocked
db
oracle
db
sqlserver
duplicate
feature
cache
frontport/done
frontport/main
invalid
kind
breaking
kind
bug
kind
build
kind
dependencies
kind
docs
kind
driver
kind
enhancement
kind
feature
kind
performance
kind
proposal
kind
question
kind
refactor
kind
testing
need
feedback
need
test
proposal:accepted
RaspBerry Pi
regression
skip-changelog
upstream
wip
wontfix
Milestone
Clear milestone
No items
No Milestone
Assignees
Clear assignees
No Assignees
1 Participants
Notifications
Due Date
The due date is invalid or out of range. Please use the format 'yyyy-mm-dd'.

No due date set.

Dependencies

No dependencies set.

Reference: xorm/xorm#2142
No description provided.
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?