Answer Posted / sen

SELECT ROWNUM, LEVEL
FROM DUAL
CONNECT BY LEVEL < 5;

how to delete duplicate rows from a join tables(I have three tables on that join) how do you know which join is need to be used? The select statement I have is: SELECT gc_skill_type.skill_type, gc_area_tec.area, gc_technology.technology, gc_technology.id_technology, gc_area_tec.id_area_tec FROM gc_skill_type, gc_area_tec, gc_technology WHERE gc_area_tec.id_skill_type (+) = gc_skill_type.id_skill_type AND gc_technology.id_area_tec (+) = gc_area_tec.id_area_tec order by gc_skill_type.skill_type asc, gc_area_tec.area asc, gc_technology.technology asc

4019

---

what is a composite key ? : Sql dba

1065

---

What does bitemporal mean?

1071

---

Can I copy :old and :new pseudo-records in/to an oracle stored procedure?

1209

---

What is the advantage of index in sql?

972

---

Does a primary key have to be a number?

965

---

Is inner join same as self join?

1119

---

What are triggers in sql?

1022

---

can a stored procedure call itself or recursive stored procedure? How much level sp nesting is possible? : Sql dba

1000

---

What is set transaction?

1039

---

Which sql statement is used to delete data from a database?

963

---

what are all the different types of indexes? : Sql dba

1048

---

what is heap table? : Sql dba

1108

---

which tcp/ip port does sql server run on? : Sql dba

1029

---

What is pl sql block in dbms?

1009

---