1. , .
  2. , .
  3. ( )?
  4. , ?
  5. .
  6. . .


mysql> select e_id, s_name
    -> from employee_per
    -> where m_status = 'Y';

mysql> select e_id, s_name
    -> from employee_per
    -> where s_name IS NOT NULL;
mysql> select e_id, s_name
    -> from employee_per
    -> where m_status = 'Y'
    -> ORDER BY s_name;


   mysql> select e_id, s_name
    -> from employee_per
    -> where s_name IS NOT NULL
    -> ORDER BY s_name;
mysql> select sex, count(*)
    -> from employee_per
    -> GROUP BY sex;
mysql> select m_status, count(*)
    -> from employee_per
    -> GROUP BY m_status;
mysql> select sum(children) from employee_per;
mysql> select children, count(*) AS
    -> number from employee_per
    -> GROUP BY children
    -> ORDER BY children DESC;


, Instance, - - . .





 10.11.2021 - 12:37: - Personalias -> WHO IS WHO - - _.
10.11.2021 - 12:36: - Conscience -> . ? - _.
10.11.2021 - 12:36: , , - Upbringing, Inlightening, Education -> ... - _.
10.11.2021 - 12:35: - Ecology -> - _.
10.11.2021 - 12:34: , - War, Politics and Science -> - _.
10.11.2021 - 12:34: , - War, Politics and Science -> . - _.
10.11.2021 - 12:34: , , - Upbringing, Inlightening, Education -> , - _.
10.11.2021 - 09:18: - New Technologies -> , 5G- - _.
10.11.2021 - 09:18: - Ecology -> - _.
10.11.2021 - 09:16: - Ecology -> - _.
10.11.2021 - 09:15: , , - Upbringing, Inlightening, Education -> - _.
10.11.2021 - 09:13: , , - Upbringing, Inlightening, Education -> - _.
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