Hvordan ændrer jeg datatype for et importeret regneark i mysql?

"Kommaet" kan forårsage problemer. Bruger du load data infile til dette?

Forudsat tabeldefinition:

CREATE TABLE `t` (
  `code` varchar(255) DEFAULT NULL,
  `state` char(2) DEFAULT NULL,
  `city` char(3) DEFAULT NULL,
  `name` varchar(255) DEFAULT NULL,
  `year` int(11) DEFAULT NULL,
  `pop1` int(11) DEFAULT NULL,
  `pop2` int(11) DEFAULT NULL,
  `diff` int(11) DEFAULT NULL,
  `ratio` float DEFAULT NULL
)

Følgende ville importere filen:

load data local infile "test.txt"
into table t
columns terminated by '\t'
optionally enclosed by '"'
(code, state, city, name, year, @var1, @var2, diff, ratio)
set pop1=replace(@var1,",", ""),
    pop2=replace(@var2, ",", "");

ville indsætte følgende række:

 code: CN010010
state: 01
 city: 001
 name: Autauga County, AL
 year: 2005
 pop1: 23831
 pop2: 23061
 diff: 770
ratio: 3.2