Interested to Buy Any Domain ? << Click Here >> for more details...
What technique is used to retrieve data from more than one
table in a single SQL statement?
- 9 Answers
- 15787 Views
- CTS, IBM, TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / mani
Both UNION or UNION ALL and JOIN can be used.
The purpose of retreiving data from more than one table in a
single statement generally happens when the ouput of the
involved tables has same table structure and in this case
either UNION (to eliminate the duplicates in the resultant
table)or UNION ALL (to retain the duplicates in the
resultant table)could be used.
If retrieval is based on seletion criterion then JOINS could
also be used but here the resultant table structure can be
different from that of the tables involved in join operation.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / ravi
We can do this by using JOINS as well as Sub Queries
| Is This Answer Correct ? | 4 Yes | 2 No |
Answer / rahul
select <column name of 1st table>,<column name of 2nd table>
from <Table name 1st>,<Table name2nd>;
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / anjireddy vintha
By using JOINS and UNIONS we can retive data from
morethan one table.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / karthik
select <column name of 1st table>,<column name of 2nd table>
from <Table name 1st> join <Table name2nd> where
table1.columnname = table2.columnname;
atleast one column should be unique in both the tables.
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / ajay rana
join techniques is used to to retrieve data from more than
one table in a single SQL statement.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / biryuk
UNION could be used to retrieve data from more than one
table as well.
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / bala
Using Temp Table data can be retrieved from more than one
table.
| Is This Answer Correct ? | 0 Yes | 3 No |
Before you give the explain statement, what are the prerogatives?
Cursors can be declared in both working-storage & procedure division, Agreed. But is there any difference? If could you please suggest what is the difference. TIA
What information is held in SYSIBM.SYSCOPY?
we can code COPY DCLGEN or INCLUDE DCLGEN, At which stage of the precompilation , dclgen get expanded if we write 1) copy 2) include one question about dclgen.. Is it mandatory to use declare table in dclgen.. I think no...but it will be used by the precompiler to validate the table name,column name etc.., can one clear my doubt ..is it necessary to include declare table or not?
What is -904 sql code? How to resolve it?
What is sqlca’s maximum length?
How do I import a csv file into db2?
What is Skeleton cursor table (SKCT)?
What is db2 plan table?
What is database manager in db2?
If I have a view which is a join of two or more tables, can this view be updateable?
Bind concepts in DB2 cobol
10 Answers IBM, TCS, TRD, Virtusa,
COBOL 
