進行關於MySQL的計算負載數據

Question

我有以下兩個SQL語句

LOAD DATA LOCAL INFILE '~/data/geo_blocks.csv' INTO TABLE geo_blocks FIELDS ENCLOSED BY '\"'TERMINATED BY ',' LINES TERMINATED BY '\n' (ip_start, ip_end, location_id); 

&

update geo_blocks set index_geo = (ip_end - mod(ip_end, 65536)); 

有沒有辦法結合LOAD DATA語句在同一時間進行計算？

Answer 1

你應該嘗試在LOAD DATA INFILE命令SET子句 -

LOAD DATA LOCAL INFILE '~/data/geo_blocks.csv' 
INTO TABLE geo_blocks 
FIELDS ENCLOSED BY '\"'TERMINATED BY ',' 
LINES TERMINATED BY '\n' 
(@ip_start, @ip_end, location_id) 
SET index_geo = @ip_end - MOD(@ip_end, 65536);