what is a cursor

9 Answers   IBM, TCS, Wipro,

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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  

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How long it takes to learn pl sql?

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what is the difference between myisam static and myisam dynamic? : Sql dba

0 Answers  

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What is thread join () in threading?

0 Answers  

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What is the use of procedures?

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What is the use of triggers?

0 Answers  

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In a Distributed Database System Can we execute two queries simultaneously ? Justify ?

3 Answers  

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What is a primary key? Explain

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Are there any features that are decommissioned in 11g that are not present in 11g?

0 Answers  

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How can triggers be used for the table auditing?

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Which command is used to call a stored procedure?

0 Answers  

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