What are the cursor attributes used in PL/SQL ?

4 Answers  

---

Why coalesce is used in sql?

0 Answers  

---

What are transaction and its controls?

0 Answers  

---

Explain two easy sql optimizations.

0 Answers  

---

How you can copy a file to file content and file to pl/sql table in advance pl/sql?

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  

---

What are the two types of periodical indexes?

0 Answers  

---

write the Sql query for creating database backup?

7 Answers   TCS,

---

What are sql functions? Describe the different types of sql functions?

0 Answers  

---

Can sql function call stored procedure?

0 Answers  

---

explain primary keys and auto increment fields in mysql : sql dba

0 Answers  

---

what are date and time intervals? : Sql dba

0 Answers  

---