What are the differences between char and nchar in oracle?

0 Answers  

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How can we manage the gap in a primary key column created by a sequence? Ex:a company has empno as primary key generated by a sequence and some employees leaves in between.What is the best way to manage this gap?

2 Answers   Infosys,

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in account table account type amount ac1 credit 300 ac2 debit 5000 ac3 credit 3000 ac1 debit 4000 ac3 debit 2000 ac2 credit 4000 write a query how to get sum of credit & sum of debit

3 Answers   Polaris,

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What are the values that can be specified for OPTIMIZER_GOAL parameter of the ALTER SESSION Command ?

1 Answers  

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what is the difference between dbms and rdbms?

3 Answers   Oracle,

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If youre unsure in which script a sys or system-owned object is created, but you know its in a script from a specific directory, what UNIX command from that directory structure can you run to find your answer?

0 Answers  

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How does propagation differ between Advanced Replication and Snapshot Replication (read-only)?

0 Answers  

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Give SQL Query to find the number words in a sentence ? ex: 'ram charan singh' then ans:3 Answer:select length(trim('ram charan singh')) - length (replace (trim ( 'ram charan singh'),' ','')) +1 from dual The above query working properly when space between the words is only one &similar But ,If the space between the words is nonuniform. Ex:'ram charan singh is good' ans:5 i am not getting this answer using above query.

3 Answers  

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What is Trigger in Oracle?

0 Answers   MCN Solutions,

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how to get last monday of a month?

2 Answers   Multifonds,

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What is clusters ?

2 Answers  

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The table has 3 columns 4 rows. The output is which column has least null values( A COL SHOULD BE THE OUTPUT) Write the query plz. A B C ---------- 1 NULL 7 2 4 NULL NULL 5 NULL 3 NULL NULL

1 Answers   TCS,

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