![]() One option is to use choose Offset from column from the Range: dropdown, then specify an offset from the InsertionDate column, of between, say, 1 and 1,000 days. That’s better, but now the ModifiedDate column is wrong each of the date values in this column need to be some random interval after their respective insertion date. Customers can have many notes, and notes can apply to many customers. If not, you can right-click the project file, open it in EditPad (or similar) and edit the XML to point at your new database.įigure 1 shows the auto-generated data for the NotePerson table, a simple table that connects a customer with a note. If you have a previously saved SDG project, it will still work, assuming the new database has the same name and connection details. ![]() If you’ve already created a previous version of the database, while working through any of the above articles, it’s probably easiest to drop it and recreate it using the referenced script, point SDG at it and generate fresh data. Generating test data with localized addresses using SQL Data Generator – tackles the problem of producing realistic, localized addresses using regular expressionsįirstly, download and run the script to create the Customer database.How to start producing realistic test data with SQL Data Generator – gives a basic tour of the tool, introduces the Customers database that we use here, and shows what data SDG generates for each of the columns, by default.If you’re unfamiliar with SDG, I recommend you read the following pieces as well: This article will show how to exert more control over the test date in your date columns, using SDG’s Python Generator, where a Python expression or Python program provides the value to use to generate the SQL value. What if the date in a column has to be greater than a date in another one, by some varying interval? What if a date must be the same as a previous date, if the date in a third column is NOT NULL? There are plenty of examples where what SDG provides just isn’t quite enough. This is fine, generally, but occasionally you need something more. ![]() ![]() By default, SQL Data Generator (SDG) will generate random values for these date columns using a datetime generator, and allow you to specify the date range within upper and lower limits. When you’re generating test data, you have to fill in quite a few date fields. He is a regular contributor to Simple Talk and SQLServerCentral. Phil Factor (real name withheld to protect the guilty), aka Database Mole, has 30 years of experience with database-intensive applications.ĭespite having once been shouted at by a furious Bill Gates at an exhibition in the early 1980s, he has remained resolutely anonymous throughout his career. ![]()
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