how to get a list of indexes of an existing table? : Sql dba

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What is rownum in sql?

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what is the different between now() and current_date()? : Sql dba

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What are % TYPE and % ROWTYPE ? What are the advantages of using these over datatypes?

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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;

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How does postgresql compare to "nosql"?

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What is a common use of group by in sql?

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what is outer join? what is selef join? what is difference between them? what is cartecion join?

1 Answers   Fiserv, Herbinger, Synechron,

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How to return multiple records from procedure?

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Is sql low level language?

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What is a join?Explain the different types of joins?

6 Answers   Bank Of India, CitiGroup, Google, ICICI, Saama Tech, SkyTech, TCS,

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How does join work in sql?

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