[R] Some SQL Challenges
abcddp at gmail.com
Wed Aug 5 20:54:54 CEST 2009
To insert values with SQL: INSERT INTO table_name VALUES (value1, value2,
To deal with those date problems Im almost sure that R has a Date Function
somewhere in its manual. You should take a look.
Just the best help I can give, sorry
JoK LoQ wrote:
> Im trying to complete a list of jobs using SQL Querries and some "if else"
> commands but im stucked in some steps. Could any of you give me some help?
> -in COLUMN1 change the format 20JAN2000:00:00:00 to 20JAN2000 and exclude
> every row that date is different from 20.
> -extract the first character in COLUMN2 and creat COLUMN3 with that value
> -in every row in which COL3=5, value in COLUMN4=value in COLUMN5
> -create COLUMN7 where if COLUMN6="north" then COLUMN7 value="N" else
> COLUMN7 value="X"
> Ill be grateful for any help, thnks
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