What is a nested table in word?

0 Answers  

---

what are the advantages of using stored procedures? : Sql dba

0 Answers  

---

What is an exception in PL/SQL? What are the two types of exceptions?

0 Answers  

---

Hi All, I am new to both this blog and technology. I was able to see a response for one of the questions on triggers as below. I would like to know why are we using " if rtrim(to_char(sysdate,'day'))=rtrim('sunday') then" instead, can't we use " if sysdate = 'sunday' then". I can understand the use of "rtrim", but dont know y v r using to_char. I have seen this in many cases but did not get a convincible explaination. Please help me with this and do excuse if this question sounds silly. Thanks in advance...... create or replace trigger trg_sun before insert on <table name> begin if rtrim(to_char(sysdate,'day'))=rtrim('sunday') then raise_application_error(-20345,'no transaction in sunday'); end if; end trg_sun;

2 Answers  

---

How do you write an inner join query?

0 Answers  

---

Can we delete column in sql?

0 Answers  

---

What are the steps you take to tune(performance tuning) the code in plsql?

4 Answers   Cap Gemini, Infosys, TCS,

---

What is right join sql?

0 Answers  

---

What is error ora-12154: tns:could not resolve the connect identifier specified?

0 Answers  

---

what is an associative array with example?

1 Answers  

---

What is an index? What are the types of indexes? How many clustered indexes can be created on a table?

0 Answers  

---

What are the syntax and use of the coalesce function?

0 Answers  

---