difference between anonymous blocks and sub-programs.

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What is a boolean in sql?

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what is sp_pkeys? : Transact sql

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Explain the structure of pl/sql in brief.

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Why is sql*loader direct path so fast?

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What is the difference between sql and mysql?

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Is sql a backend?

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Can we debug stored procedure?

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Is vs as in pl 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 the difference between DELETE and TRUNCATE?

15 Answers   Johns Hopkins University, Tech Mahindra,

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What is a full join sql?

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