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Posted 24 Oct 2013

SQL Synonyms :.: Avoiding Dynamic SQL

, 29 Oct 2013
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A first approach to avoid Dynamic SQL in stored procedures


Multiple database scenario with the same structure, but different database name

Sometimes, we need to execute a stored procedure that manipulates table data, but don’t know which database will be, we usually pass it's name as a parameter, and fall into char concatenation and executing like the following:

declare @db varchar(10) = 'DatabaseName' -- This is a parameter actually.
declare @sentence varchar(max)
set @sentence = 'Insert into ' + @db + _
'.dbo.Table (Field1,Field2) Values (' + @Value1 + ',' + @Value2 + ') '

EXEC (@sentence)  

In complex scenarios of tables with multiple columns and datatypes, it is definitely annoying.

This is my first approach for a more elegant solution:

declare @db varchar(10) = 'DatabaseName' -- This is a parameter actually

EXEC ('CREATE SYNONYM synonym_Name  FOR ' +  @db  + '.dbo.Table')  

Insert into synonym_Name (Field1,Field2) Values (@Value1,@Value2)

DROP SYNONYM synonym_Name -- Apparently synonym can´t be updated.

Hope it helps someone.

Live long... and program!


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Claudio cespon
Web Developer
Argentina Argentina
No Biography provided

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granadaCoder15-Mar-17 5:50
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