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problem
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mssql - compare
two datetime
Mssql, compare two datetime fields, if their values are close, if are in 24h difference and do on --- > dennis |
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difficulty level
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1/10 :)))
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compatibility
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mssql
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solution
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In mssql, the
datetime fields are actually numeric with decimals. The integer part in the
“days”. So if you want to compare two dates compare the integer part as
bellow
-- compare if the item is sold 24h before the item is modified Select * from items Where ModificationDate<SaleDate-1 -- find person(s) that born on 12/11/2010 (not exactly on the same, with at least 12 hours difference) Select * from persons Where birthdate-0.5>=’2010-12-11’ and birthdate+0.5<=’2010-12-11’ |
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Developing with CSharp many time you feel a strange feeling... then feeling of lost and how to solve it. Fortunately MSDN has done a good work to help the developers. .net offers thousand ways to do several things! This is the worst thing… because, you do not know where to start from and what works in real world! I hope to help you with your CSharpache.
Showing posts with label mssql. Show all posts
Showing posts with label mssql. Show all posts
Thursday, 24 November 2011
mssql - compare two datetime fields
Wednesday, 2 November 2011
MSSQL - how to copy tables and data
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problem
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MSSQL - how to copy
- How to copy a table’s structure to another database? - How to create a table with the same structure (fields) on the - How to copy the data of the table to another table? |
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difficulty level
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4/10 :)
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compatibility
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general
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solution
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How to copy a table’s
structure to another database?
The follow code, not only copy’s the structure but also copies and the records of it. You may filter the data applying a “where” as I do here. --Do like: SELECT * INTO [TargetDatabase].[dbo].[MyTable] FROM [SourceDatabase].[dbo].[MyTable] where [SourceDatabase].[dbo].[MyTable].CustomerCode='01'; -- where is optional How to create a table with the same structure (fields) on the same database? (Like you did previously!) --Do like: SELECT * INTO MyNewTable FROM MySourceTable where MySourceTable.CustomerCode='01'; -- where is optional How to copy the data of the table to another table? --Syntax: INSERT INTO TargetTable( <field list> ) SELECT <field list> FROM SourceTable --Do like: INSERT INTO NewCustomers ( Company, Branch, Name ) SELECT Company, Branch, Name FROM Customers Where Branch=’01’; -- where is optional |
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