| Other SQL PLSQL Interview Questions |
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| Question | Asked @ | Answers |
| |
| Find out the 3rd highest salary? | BirlaSoft | 23 |
| What is an Integrity Constraint? | | 4 |
| what is difference between "Primary key" and "Unique key"? | PreVator | 4 |
| how to find the second highest salary from emp table? | Wipro | 40 |
| What is difference between a PROCEDURE & FUNCTION ? | Satyam | 5 |
| How to convert ms-excel file to oracle table? | | 2 |
| how to retrieve the top 3 salaries of the table using rownum | Oracle | 17 |
| type type_name is table of varchar2(30) index by
binary_integer
for the above type you have to create a identifier...
like
identifier_name type_name;
for the above type you can use the below methods..like
first , last , prior, next , delege..etc...like this..
if you create a cursor...like
cursor cursor_name is select * from scott.emp;
is there any methods like above to use prior, fist , last ,
next , trim ,etc... | Satyam | 1 |
| what is purge command
explain about oracle performance tuning | Accenture | 2 |
| How would you hide a table in sql. ie the table can be only
visible to its maker? | | 2 |
| 1 SELECT a.field1, b.field2, c.field3, d.field4
2 FROM atable a, atable b, ctable c, dtable d
3 ?
4 ORDER BY 1
What is the minimum number of joins that must be specified
on line 3 in the sample code above to properly link the
tables? Notice that the table "atable" is aliased twice:
once as "a" and once as "b."
1. One join
2. Two joins
3. Three joins
4. Four joins
5. Five joins
| Sonata | 5 |
| Difference between a query and strored procedure? | Microsoft | 3 |
| what is autonomouse transaction? | Oracle | 3 |
| how can i read files from a pl/sq l program | | 3 |
| Can any one tell me how to increase the performance of a
sql query ie what are the performance tips in creating or
writing a sql query !!? | eBay | 3 |
| What are different types of joins ? | BirlaSoft | 4 |
| What is the difference between anonymous block and named
blocks? | | 2 |
| How many LONG columns are allowed in a table? | | 3 |
| what is meant by forward declaration in functions? | | 3 |
| there are 2 variables called x and y ,x contains 1,2 and y
contains 3,4 we have to swap the values from x to y and y
to x with out using dummy variables and it can be done only
by using a single statement ? how? | Oracle | 8 |
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