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See map My query is: SELECT * FROM table WHERE id IN (1,2,3,4); I use it for usergroups and a user can be in more than one group. but it seems that when a record has multiple id like 1 and 3, mySQL does... I have this query : SELECT Company_Name FROM tblBeneficaries WHERE BeneficaryID IN () When I execute it it returns the message: Incorrect syntax near ')'. What is the problem?
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SELECT * FROM table1 WHERE (CM_PLAN_ID, Individual_ID) IN ( SELECT CM_PLAN_ID, Individual_ID FROM CRM_VCM_CURRENT_LEAD_STATUS WHERE Lead_Key = :_Lead_Key ) But the WHERE..IN clause allows only 1 column. How can I compare 2 or more columns with another inner SELECT? When dealing with big databases, which performs better: IN or OR in the SQL WHERE clause? Is there any difference about the way they are executed? SELECT * FROM Wherever WHERE Greeting in ('hello', 'hi', 'hey') All modern SQL servers optimize your queries, so they're both likely to be changed into the same code that runs on the server, so performance differences will be negligible or non-existent.
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Edit: Apparently the in option is faster, as it evaluates to a binary lookup, whereas the multiple = just evaulates each statement individually. WHERE Col >= 123 AND Col <= 10000 then removed unwanted records in the specified range by looping in the application code. It worked well for me because I was looping the record anyway and ignoring couple of thousand records didn't make any difference. Of course, this is not a universal solution but it could work for situation if most values within min and max are required. SELECT * FROM TABLE WHERE ID IN (id1, id2, ..., idn) My question here is. What happens if n is very big?
Also, what about performance? 2) Writing a query using OR select - SQL WHERE ID IN (id1, id2, ..., idn) - Stack Overflow Wherein means "in which place, situation or thing; in what way." It is a formal word that is almost equivalent to where. an organization wherein each employee is valued and respected an organization where each employee is valued and respected It is a question from "Manhattan Review GMAT Sentence Correction Guide [4th edition]" Question number 28 in which it states "where" is incorrect usage. pronouns - where to use "where" and "in which" - English Language ...