What is the difference between an inner join and an outer join?

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HOW TO TUNE ORACLE SQL QUERIES GIVE ME STEP BY SREP

1 Answers   TCS,

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What is clause in sql?

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What is primary key and unique key?

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Is time a data type in sql?

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What are views in sql?

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I want to create synonym for table emp but in my pc it is giving insufficient previliges.I am using user scott.Please suggest me.

3 Answers  

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How do I install sql?

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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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What is recursive join in sql?

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What is pragma in pl sql?

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Types of cursor locks and explanation each of them ?

3 Answers   DELL, HP Finsoft,

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