…ingcap#12279)

…ecSig (pingcap#12252)

…malSig (pingcap#12426)

…12421)

…cap#12427)

…ingcap#12400)

…ingcap#12429)

…2371)

…ingcap#12430)

…ingcap#12439)

…ap#12023)

…ap#12432)

…pingcap#12277)

Signed-off-by: Lonng <heng@lonng.org>

Signed-off-by: Lonng <heng@lonng.org>

…ingcap#12455)

pingcap#12459)

…ngcap#12433)

…p#12476)

…ig (pingcap#12842)

…Sig (pingcap#12834)

…gcap#12864)

Signed-off-by: zhangjinpeng1987 <zhangjinpeng@pingcap.com>

…g` (pingcap#12841)

…ting `grant all on ...` (pingcap#12330)

…S errors (pingcap#12578)

…or 'insert ignore' performance (pingcap#12872)

…#12887)

)

pingcap#12663)

…ingcap#12886)

…gcap#12879)

…can't get result. (pingcap#12889)

… is waiting for the pessimistic lock (pingcap#12852)

feature: add udf support.
feature: test where function
feature: add parser.
example: add trim user define plugin.
rm useless debug code.

* first commit
1. plugin add Engine
2. show engine && show table status is work right with plugin
3. csv reader example

* code support OnReaderNext and OnReaderOpen

* plugin support selection