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CREATE TABLE `paynet`.`emailHistory ` (
`EmailID` INT NOT NULL
) ENGINE = MYISAM ;
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mysql ÖÐÒ»¸ö±íÖÐ×Ö¶ÎÈçÏÂ: id value create_time Èý¸ö×Ö¶Î
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1 test1 2009-9-10
1 test2 2009-9-11
2 testg 2009-9-10
3 t ......
Java code:
import java.sql.*;
public class DBTester1 {
public static void main(String[] args) throws Exception {
Connection con;
Statement stmt;
ResultSet rs;
......
SELECT a.tguildname ,SUM(a.ct) + if (SUM(b.ct) IS NULL ,0,SUM(b.ct)) from (
SELECT tg.tguildname,c.cid, (
cf.fbb + cf.fgjbb + cf.fjybb + cf.fqb + cf.fgjqb + cf.fjyqb + cf.fqib + cf. ......