Translation of this issue:

Existing Component

yes

Component Name

Table

Description

Table's Common Problems

1. Related to fixed columns
2. Multiple Popover components appear
3. Bottom scrollbar cannot be dragged
4. Fixed column headers do not display [Bug Report] Table Column fixed prop can't work on multiple level column #9926
5. Height keeps unchanged
6. Performance issues
7. Table performance optimization [Feature Request] Table rendering is too slow when 1000 records (hopefully you can support scrolling according to scroll bars) #6089 when data is large
8. ~ The mouse triggers repeated rendering [Bug Report] ElTable component calls row/cell class/style functions on hover event #14550~ (repaired) while the table is suspended.
9. Scrollbar Problem
10. When a scroll occurs, the position of the scroll bar el-button怎么点击触发事件 #64
11. Scrollbars cannot be dragged (described in 1.1)
12. Custom scrollbar display problem [Bug Report] After changing the scrollbar style globally, when the table height is set to hold the left fixed column, the left fixed column blocks the horizontal scrollbar, and the scroll to the bottom border will dislocate #12607
13. Sort correlation
14. Ordering Loss fix contribution url #23
15. CleaSort cannot clear custom sort-mothod slave [Bug Report] Table clearSort() doesn't work on custom sort. #13873
16. sort-mothod problem [Bug Report] Bug in el-table sort-method #13842 (not necessarily an element bug)
17. filter
18. Allow customization [Feature Request] Can add table columns filter slot at el-table? #11807
19. Expansion
20. Scroll bars (related to fixed columns) appear after expanding row display [Bug Report] table column (type = expand) bug #13868
21. show-overflow-tooltip
22. Attribute [Feature Request] 使TABLE内自带TOOLTIP方向可配置 #13576 to support configuration tooltip ____________
23. Tree data
24. Children, hasChildren can be configured with [Feature Request] Optimizing Tree Table #14910
25. Expansion row (default-expand-all only controls expansion row) button doesn't have correct focus style #982
    The optimization of the Three Gorges Project
26. Functional splitting, allowing more customization options.
27. Non-core functions are stripped out, such as sorting, indexing column (type = index) splitting, show-overflow-tooltip, providing default options, and supporting customization.
28. The functions of expanding rows (type = exapnd) and displaying tree data are separated into two new components: ExpandTable and TreeTable. So you don't have to worry about certain attributes: default-expand-all expand-row-keys, event expand-change, and method: toggle Row Expansion.
29. Provide more customization functions, such as customizing icon display and filtering panel customization.
30. Splitting modules means that users can develop some plug-ins according to their own needs.
31. Performance optimization and providing more functions.
32. Provide high performance tables.
33. The table can bring a pagination.
34. Fixed column optimization
35. Currently, fixed columns are implemented by ** copying a complete table ** and modified to copy only the necessary columns.
36. Solve typesetting problems caused by fixed columns: such as scroll bar dragging.

https://codepen.io/dawnfrost/pen/NJmjdK
这个tabs问题尽快解决吧

有支持表格可视区域渲染的计划吗

treeTable use load this way, i think will some problem.
i can't controller table data...

由于项目中很多带有 children 的数据
问下什么时候能支持关闭树结构，不需要渲染树，希望能支持关闭。

静等更新，不知道 @ziyoung 是不是官方维护人员，给你点个赞

pr #15709

树形表格缩进对齐的问题可以考虑一下吗？
如果一个行，它包含children行，就会因为它前面有一个展开/收起的小三角造成不会和它同级的行在文字上垂直对齐，我觉得应该是对齐会更好。

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