How does left join work in sql?


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More SQL PLSQL Interview Questions

What is the most common sql injection tool?

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how to create table with in the procedure or function?

2 Answers   Genpact, HCL,


Explain normalization and what are the advantages of it?

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Why do we need view in sql?

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How to write a procedure for displying the data in a TREE or (PARENT and CHILD ) relationship , for ex: A is the main project id, for this project B,C,D are sub tasks(sub project id's) for B the sub tasks are e,f,g and for c is h ,i ,j and for d is k,l,m now i need to display the o/p in a TREE fashion pls help me , thanks in advance surendra

2 Answers   Zensar,






What does rownum mean in sql?

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What is indexing in sql and its types?

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How to delete same emp id in sql query for exmaple in emp table emp id, empname, emp address. for example emp id =5, repeated in two times in rows same id how to delete same empid please any one of the write query send in my id

8 Answers   CGCI,


Can we update views in sql?

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i want count no of values in a column i.e enam eempno phoneno x 1 (98765,09887,096561,87964579,156678,678900876) that means if i select phone no from table i want to get total count of phone numbers i.e 6

8 Answers   Satyam,


Why is there a need for sqlcode and sqlerrm variables?

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List out the acid properties and explain?

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