How do I filter in sql profiler?

0 Answers  

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what is the difference between cluster and non cluster index? : Sql dba

0 Answers  

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how to retrieve last tree records from table? select *from emp where rownum > (select count(*)-3 from emp); i am using this query to get last three records from table but its not giving any output, so please tell me what is the error in this query.

16 Answers  

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How many developers work on postgresql?

0 Answers  

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How to recompile a already made trigger?

2 Answers  

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How do I create a memory optimized filegroup?

0 Answers  

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How many triggers can be implemented for a table?

3 Answers   HSBC,

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Is nosql relational?

0 Answers  

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How do you delete data from a table?

0 Answers  

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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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differentiate between float and double. : Sql dba

0 Answers  

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Types of optimization?

6 Answers   Microsoft,

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