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SQL PLSQL Interview Questions
Questions Answers Views Company eMail

How do you modify a table in sql?

1115

Can we change the table name in sql?

935

How do I save the results of sql query in a file?

968

How many sql are there?

986

Is not equal in sql?

1006

Are sql database names case sensitive?

996

How do I copy a table in sql?

975

What are synonyms in sql?

965

How do you copy a table in sql?

1059

Is nosql relational?

938

Do prepared statements prevent sql injection?

946

How many commands are in sql?

1061

How do I send sql query results to excel?

1056

How can I change database name in sql?

1068

Is postgresql a nosql database?

1149


Post New SQL PLSQL Questions

Un-Answered Questions { SQL PLSQL }

Hi, I am new in oracle(SQL), could anyone help me in writing a correct SQL. Below is the table structure. Table: Subsc Fields: 1. Sub_no (this field will hold values of subscriber nos, for e.g. S111111, S222222, S333333, S444444, etc.) 2. s_status (this field will hold values for different status of subscriber, for e.g. 'A', 'S', 'C', etc.) 3. cus_id (this field will hold values of bill nos for e.g. 11111111, 22222222, 33333333, 44444444, etc.) Table: Bill Fields: 1. Bill_no this field will hold values of bill nos for e.g. 11111111, 22222222, 33333333, 44444444, etc.) 2. b_status = (this field will hold values for different status of bill for e.g. 'O', 'C', 'S', etc.) Note: 1. The Sub_no is a Primary key of Subsc table. 2. The cus_id is a foreign in Subsc table (referred from Bill_no field of Bill table) 3. The Bill_no field is the Primary key of Bill table. Query A --> I wrote a query to select cus_id/Bill_no which is in status open (b_status = 'O') and having more than two active subscriber (i.e. S_status = 'A') in it ( i.e. more the two subscribers in same bill). select s.cus_id from subsc s where exists (select 1 from bill where bill_no = s.cus_id and b_status = 'O') and s_status = 'A' group by s.cus_id having count(sub_no) = 2 Problem : The above query will give the cus_id (or rather bill_no) which are in open status (b_status ='O) and which are having TWO ACTIVE Subscribers (s_status ='A') in it. However, this query will also lists the cus_id/bill_no which are having more than TWO subscribers in it (but only two subscriber will be in Active status (s_status = 'A') and the others will be in s_status = 'C' or s_status = 'S'. Help needed: I want to write a query which will fetch ONLY the cus_id/bill_no which are in open status (b_status ='O') and which are having ONLY TWO ACTIVE subscribers (s_status ='A') in it. B--> If I include the sub_no in the above query then NO row are returned. select s.cus_id, s.sub_no from subsc s where exists (select 1 from bill where bill_no = s.cus_id and b_status = 'O') and s_status = 'A' group by s.cus_id, s.sub_no having count(sub_no) = 2 Help needed: I want to modify the above query which will fetch ONLY the cus_id/bill_no which are in open status (b_status ='O') and which are having ONLY TWO ACTIVE subscribers (s_status ='A') in it ALONG with the sub_no. Thanks a lot in advance. Regards, Nitin

2346


Mention what plvcmt and plvrb does in pl/sql?

1130


what is a trigger? : Sql dba

1020


What is the difference between subquery and correlated query?

1055


What is bulk compiling in pl/sql.?

1121


What is cartesian join in sql?

1107


What is pragma in sql?

1065


explain mysql aggregate functions. : Sql dba

980


What is a nested table in word?

952


What is the best partition size for windows 10?

995


How to get help at the sql prompt?

1109


Can a table contain multiple primary key’s?

1092


What is full join in sql?

983


What is cursor in pl sql with examples?

1030


What is the difference between union and union all command?

1082