mysql - want the result of all employee even though he has not done any activity on particular day -

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i have 4 tables;

  • employee_details columns emp_code , emp_name
  • actual_all_details columns emp_code, date, activity_id, card_id, , quantity
  • activities columns activity_id (primary key) , activity
  • cards columns card card_id (primary key) , card_type

activities:

activity_id   activity     1         tape laying     2         embossing     3         courier packing     4         thermal

cards

card_id   card_type     1     barcoding     2     big ribbon     3     biman

employee_details

emp_code    emp_name     1       shraddha     2       mayuri     3       kishori

actual_all_detalis table:

emp_code  date         activity_id   card_id   quantity     1     2015-12-19       1             2         266     2     2015-12-19       1             3         300     3     2015-12-19       3             2         400

now query return emp_code activity though has not done employee on particular day , should return activity related card type.
example, result should return quantity 0 if emp_code 2 has not done activity on particular day, e.g.

emp_code      date        activity     card_type      quantity        2         2015-12-19  embossing    barcoding          0

try this:

select emp_code, date, activity_id, card_id, quantity  employee_details left join   (cards inner join actual_all_detalis on cards.card_id = actual_all_detalis.card_id)     on actual_all_detalis.emp_code = employee_details.emp_code datediff(date, '2015-12-19') = 0

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