$query="SELECT i.trans_date, f.col_code,f.trans_qty ,t.dept_code
FROM table1 AS i
LEFT JOIN table2 AS f
ON f.trans_no=i.trans_no
LEFT JOIN table3 AS t
ON t.trans_no=i.trans_no";
trans_no --> Primary key in table 1
trans_no --> Foreign key in table 2,3
I am trying to fetch the above fields from the 3 tables but not getting it?
I wanna fetch date(tbl1),qty(tbl2),col_code(tbl2),col_code(tbl3),dept_code(tbl3)
.. Plz Help
Probably doesn't have the same key values. Please check the row data in your tables.
You should use alias for columns col_code for avoid ambiguity ( and related query error ) due the fact these column name is present in tow different tables involved in the same query eg you could add the alias col_code_t2 and cold_code_t3
query="Select i.trans_date
, f.col_code col_code_t2
, f.trans_qty
, t.col_code cold_code_t3
, t.dept_code
from table1 AS i
LEFT JOIN table2 AS f ON f.trans_no=i.trans_no
LEFT JOIN table3 AS t ON t.trans_no=i.trans_no";
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