A SQL Server Database Project is a Visual Studio project type for developing T-SQL and database deployment artifacts. It becomes especially useful when SSMS alone is not enough: Visual Studio can provide live error analysis, debugging, schema comparison, and publishing. Ignoring these capabilities turns simple stored-procedure defects into lengthy troubleshooting sessions. section 7.0 section 7.7
Use the project around a practical development workflow:
- Import an existing database through Project | Import | Database, creating a connection to the database being developed. section 7.3
- Add stored procedures and use the Error List window to find build and IntelliSense errors as code changes. section 7.3
- Debug instead of repeatedly commenting out queries or inserting PRINT statements; use breakpoints, Continue, Step Over, and Step Into. section 7.3
- Publish through the project context menu, then use schema comparison before deployment to understand drift, changes, and affected functionality. section 7.3 section 7.7
Mistake: debugging only in SSMS
A developer repeatedly executes dbo.CalculateCampaignSummary, substitutes variables, and runs individual queries to locate a defect. In a Marketing project imported from an existing database, Visual Studio can flag invalid code in the Error List, pause at breakpoints, inspect locals, and execute diagnostic queries in the Immediate window. The corrected procedure can then be tested and published against the configured Marketing database. section 7.3
Listing 7.13 Creating a CalculateCampaignSummary stored procedure
CREATE PROCEDURE dbo.CalculateCampaignSummary
@CampaignID INT,
@Budget MONEY
AS
BEGIN
DECLARE @AvgCPM DECIMAL ;
DECLARE @CampaignCost MONEY ;
DECLARE @NoOfImp INT ;
DECLARE @AvgBidPrice MONEY ;
DECLARE @CostOfBidPerc DECIMAL ;
DECLARE @BudgetDifference MONEY ;
SELECT
@NoOfImp = COUNT(*)
, @CampaignCost = (SUM(CostPerMille) / 1000) * COUNT(*)
FROM marketing.Impressions
WHERE CampaignID = @CampaignID
GROUP BY CampaignID ;
SELECT
@avgcpm = AvgCostPerMille
, @avgbidprice = AvgBidPrice
FROM reporting.ImpressionAggregates
WHERE CampaignID = @CampaignID ;
SET @CostOfBidPerc = (@AvgBidPrice / @AvgCPM) * 100 ;
SET @BudgetDifference = @budget - @CampaignCost ;
SELECT
@CampaignID CampaignID
, @AvgCPM AvgCPM
, @CampaignCost CampaignCost
, @NoOfImp ImpQty
, @CostOfBidPerc CostToBidPercentage
, @BudgetDifference ;
SELECT DISTINCT
ReferralURL
, RenderingID
FROM marketing.Impressions
WHERE CampaignID = @CampaignID ;
END
Use the complete CalculateCampaignSummary procedure as a concrete project artifact for practicing procedure creation, debugging, and correction. section 7.3
