Обсуждение: i need solution to this problem
Hi good morning to all……..
I have tables like 1) emp_table (personal_no integer (foreign key), cdacno varchar (primary key),name varchar);
2) Rank_table (rank_id varchar (primary key), rank_name varchar);
3) Rank_date_table (rank_id (foreign key), rank_date date);
4) Unit_table (unit_id varchar (primarykey), unit_name varchar);
5) Personal_table (per_no varchar (primary key), pername varchar);
My query is ….if I give cdacno I have to get per_no from personal_table.. With this I have to display rank_name from rank_table ,name from emp_table, unit_name from unit_master..
Like that if I give per_no I have to get cdacno from emp_table.. .. With this I have to display rank_name from rank_table ,name from emp_table, unit_name from unit_master..
Doing these things first it has to check when we r giving cdacno.. whether per_no is null or not.. like this if I give per_no it has to check cdacno is null or not.
Let me know the solution..
But I written one function to this to get per_no if I give cdacno………………….
Thanks & Regards
Penchal reddy | Software Engineer
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On mið, 2006-06-28 at 11:15 +0530, Penchalaiah P. wrote: > I have tables like 1) emp_table (personal_no integer (foreign key), > cdacno varchar (primary key),name varchar); > 2) Rank_table (rank_id varchar (primary key), rank_name varchar); > 3) Rank_date_table (rank_id (foreign key), rank_date date); > 4) Unit_table (unit_id varchar (primarykey), unit_name varchar); > 5) Personal_table (per_no varchar (primary key), pername varchar); > My query is ….if I give cdacno I have to get per_no from > personal_table.. With this I have to display rank_name from > rank_table ,name from emp_table, unit_name from unit_master.. it is not clear what the relationships are between the tables. for example what is the foreign key to unit_table? how does the rank connect to emp_table or personal_table? gnari >
> > I have tables like 1) emp_table (personal_no integer (foreign key), > > cdacno varchar (primary key),name varchar); > > > 2) Rank_table (rank_id varchar (primary key), rank_name varchar); > > > 3) Rank_date_table (rank_id (foreign key), rank_date date); > > > 4) Unit_table (unit_id varchar (primarykey), unit_name varchar); > > > 5) Personal_table (per_no varchar (primary key), pername varchar); > > > My query is â¦.if I give cdacno I have to get per_no from > > personal_table.. With this I have to display rank_name from > > rank_table ,name from emp_table, unit_name from unit_master.. > > it is not clear what the relationships are between the tables. for > example what is the foreign key to unit_table? > > how does the rank connect to emp_table or personal_table? yes. in addition to this, it seems that emp_table references personal_table on personal_no = per_no. But it is not clear how this is the case when personal_no is an integer and per_no is a varchar. Regards, Richard Broersma Jr.