How to connect a sql statement with time query parameter?

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2.00/5 (1 vote)

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SQL-Server-2005

SQL

SQL-Server

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I write the sql here:

SQK

declare @sql varchar(100)
set @sql='select * from student where  birthday='+'''1990-01-20 21:00:00.000'''
exec(@sql)

but it search nothing,and it has data in db.

Posted 23-Jan-13 14:27pm

zqliu

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chaau 23-Jan-13 21:46pm

are you sure you have data with this datetime value? Can you post here some example from your student table?

PIEBALDconsult 23-Jan-13 21:55pm

Look into BETWEEN. And I hope you're not storing the date as a string. But thanks for using a proper date format.

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Mycroft Holmes · Accepted Answer · 2013-01-23T16:06:00

Solution 1

This query will return the records with a birthday date of 9pm on 20th January 1990, pretty specific. Check whether your birthday field is storing the time component of the datetime values

Assumes time component and it will be defaulted to 00:00:00.000 so you get all the 20th records

SQL

SELECT * FROM student WHERE birthday BETWEEN '1990-01-20' AND '1990-01-21'

This drops the time component from the comparison

SQL

SELECT * FROM student WHERE CONVERT(DATE,birthday) = '1990-01-20'

Posted 23-Jan-13 16:06pm

Mycroft Holmes

Comments

zqliu 23-Jan-13 22:40pm

It is true when run directly,but fail when run using declare,exec this type

Subrata.In 23-Jan-13 23:42pm

If your birth day field storing date and time then you can try:

SELECT * FROM student WHERE birthday BETWEEN '"+FromDate.ToString("dd-MMM-yyyy")+"' AND '"+ToDate.ToString("dd-MMM-yyyy 23:59:59")+"'

Store birth day without time and fetch using "dd-MMM-yyyy" format.