我有这样的行(大约120000),我的表有3列,如a,b,c.
a b c
--- --- ---
hello world 10
hey you 80
world hello 20
my day 15
merhaba dunya 40
life good 75
good day 70
thank you 15
it is 40
dunya merhaba 20
is it 80
我想在前两列(a和b)中找到反向值,并在c列中求和它们的值.
结果应如下所示:
a b c
--- --- ---
hello world 30
hey you 80
my day 15
merhaba dunya 60
good day 70
thank you 15
it is 120