Databases
StackOverflow2013
Postsdbo
POFather Son Relation
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POFather Son Relation
    primarykey
    data
    text
    <p>I want to design a database which stores the family members and a query can be constructed to find that who is father of whom. In short a father son relationship.</p> <p>This is what I came up with</p> <p><strong>Family</strong> </p> <pre><code>| id | Name | --------------------------- | 1 | Ankit | --------------------------- | 2 | Nishant | ...... </code></pre> <p>and in relation to this to find the relation of son and father I created another table</p> <p><strong>Father</strong></p> <pre><code>| father_id | Son_id | -------------------------------- | 1 | 2 | ------------------------------- ..... </code></pre> <p>I feel its not correct can someone guide me and what query needs to be written to get such a relation.</p> <p>Thanks in advance</p> <p>EDIT</p> <p>ok I tried to the query now but somehow i am getting the error This is what I am doing</p> <pre><code>select f.name as father_name, s.name as son_name from (select family.name from family,father where father.father_id = family.id ) as f Inner Join (select family.name from family,father where father.son_id = family.id) as s on (family.id = father.father_id and family.id = father.son_id) </code></pre> <p>the error is</p> <pre><code>Msg 4104, Level 16, State 1, Line 2 The multi-part identifier "family.id" could not be bound. Msg 4104, Level 16, State 1, Line 2 The multi-part identifier "father.father_id" could not be bound. Msg 4104, Level 16, State 1, Line 2 The multi-part identifier "family.id" could not be bound. Msg 4104, Level 16, State 1, Line 2 The multi-part identifier "father.son_id" could not be bound. </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAnkit Suhail
    1. USAnkit Suhail
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COWhy do you feel this is not correct? A relation of a table on itself is perfectly OK.
      singulars
      1. POFather Son Relation
      1. This table or related slice is empty.
    2. COI had an idea that it will work but didn't knew that it is th correct method to do so as one might enter hus own id.. A person can not be his own father.. So i was in doubt.
      singulars
      1. POFather Son Relation
      1. USAnkit Suhail
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload