常用mysql SQL语句

从数据库导出数据
需进入mysql\bin目录下执行       
mysqldump  --single-transactio --quick --default-character-set=utf8  -ubi_root  -P3306 -hlocalhost -pmanagerroot%@!  incrmentbak job  > job_028.sql       
mysqldump  --single-transactio --quick --default-character-set=utf8  -uroot  -P3306 -hlocalhost -p  incrmentbak job_profession_info  > job_profession_info_028.sql       
   
       
数据库导入
use incrmentbak;
set names 'utf8'
set autocommit=0
source  文件名

truncate table xxname删表内容


修改时间戳？   ALTER TABLE statistic_corp_totalize_day  MODIFY  ts TIMESTAMP  DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP

   
   
SELECT * FROM     profession_info_num WHERE num > 1 ORDER BY num DESC;

CREATE TABLE profession_info_num_abs AS
 SELECT p1.job_title job_title, p1.profession_type_id profession_type_id,
        ABS(p2.max_num - p1.num) result
        FROM profession_info_num p1, profession_info_num_max p2
        WHERE p2.job_title = p1.job_title
        HAVING result = 0;



创建表
CREATE TABLE profession_info AS
    SELECT  p.id_level2 level1, p.id_level2_name level1_name, p.id_level1 level2, p.id_level1_name level2_name,
    p.node_id profession_type_id, p.function_name profession_type, j.job_title job_title
    FROM company_detail c,job j,job_profession_type_company_id jptci,profession_type_dim p
    WHERE p.node_id = jptci.profession_type AND jptci.job_id = j.id AND c.id = jptci.company_id
     ORDER BY jptci.profession_type;
     
CREATE TABLE job_profession_info AS
    SELECT  p.id_level2 level1, p.id_level2_name level1_name, p.id_level1 level2, p.id_level1_name level2_name,
    p.node_id profession_type_id, p.function_name profession_type, j.job_title job_title
    FROM company_detail c,job j,job_profession_type_company_id jptci,profession_type_dim p
    WHERE 2>3;
插入数据
INSERT INTO job_profession_info(level1,level1_name,level2,level2_name,profession_type_id,profession_type,job_title)
SELECT level1,level1_name,level2,level2_name,profession_type_id,profession_type,job_title
FROM profession_info