what is sql server agent? : Sql dba

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Write an sql query to select all records from the table?

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What are expressions?

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What is not equal in sql?

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Can a key be both primary and foreign?

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How can you maintain the integrity of your database on instances where deleting an element in a table result in the deletion of the element(s) within another table?

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What is the basic structure of an sql?

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what are the drivers in mysql? : Sql dba

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What is pl sql collection?

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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 where clause in sql?

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What is the purpose of the partition table?

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