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double a,b;
char* c = (char*)malloc(sizeof(double)*2);
memcpy(c,&a,8);memcpy(c,&b,8);
int h = open(filepath,wr);
write(h,c,16);
create table dht_tab(name1 DOUBLE ,name2 DOUBLE, ... ,name45 DOUBLE)row format delimited fields terminated by '\t';
--用制表符作为分隔符
load data local inpath 'LOCAL_PATH/dhtnew.dh' overwrite into table dht_tab fields terminated by '\t'
确认你要倒入文件的分隔符