Post date: Feb 4, 2014 4:01:11 PM
A simple framework to help generate data into tables.
This framework is available for download as open source at
https://code.google.com/p/peter-henell-sql-data-generation-toolkit/
Further development will be done on that repository.
Use it like this:
INSERT INTO someTable(dateColumn, dateColumn, dateColumn, intColumn, decimalColumn, varcharColumn)SELECT gen.day_series(N, '2014-01-01', DEFAULT) AS [Day series], gen.minute_series(N, '2014-01-01', DEFAULT) AS [Minute series], gen.hour_series(N, '2014-01-01', DEFAULT) AS [Hour series], gen.ints(N, DEFAULT, DEFAULT, DEFAULT) AS [Ints], gen.decimals(N, DEFAULT, DEFAULT, DEFAULT) AS [Decimal numbers], gen.strings(N, 10, 25) AS [Strings]FROM gen.generate_range(1, 1000);
Install the framwork with this snippet
IF NOT EXISTS (SELECT * FROM sys.schemas WHERE name = 'gen')BEGIN exec('CREATE SCHEMA [gen] AUTHORIZATION [dbo]');ENDGOIF object_id(N'gen.generate_range', N'IF') IS NOT NULL DROP FUNCTION gen.generate_range GOCREATE FUNCTION gen.generate_range(@from bigint, @to bigint)RETURNS TABLE WITH SCHEMABINDING RETURN SELECT TOP (@to - @from + 1) ROW_NUMBER() OVER (ORDER BY (SELECT null)) - 1 + @from AS [N] FROM (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) a(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) b(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) c(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) d(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) e(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) f(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) g(n), (VALUES(1),(2),(3),(4),(5),(6),(7),(8),(9),(10)) h(n)GOIF object_id(N'gen.day_series', N'FN') IS NOT NULL DROP FUNCTION gen.day_series GOCREATE FUNCTION gen.day_series(@n bigint, @from datetime2(7), @step tinyint = 1)RETURNS datetime2(7)WITH schemabindingASBEGIN RETURN DATEADD(day, (@n - 1) * @step, @from);ENDGOIF object_id(N'gen.second_series', N'FN') IS NOT NULL DROP FUNCTION gen.second_series GOCREATE FUNCTION gen.second_series(@n bigint, @from datetime2(7), @step tinyint = 1)RETURNS datetime2(7)WITH schemabindingASBEGIN RETURN DATEADD(second, (@n - 1) * @step, @from);ENDGOIF object_id(N'gen.minute_series', N'FN') IS NOT NULL DROP FUNCTION gen.minute_series GOCREATE FUNCTION gen.minute_series(@n bigint, @from datetime2(7), @step tinyint = 1)RETURNS datetime2(7)WITH schemabindingASBEGIN RETURN DATEADD(minute, (@n - 1) * @step, @from);ENDGOIF object_id(N'gen.hour_series', N'FN') IS NOT NULL DROP FUNCTION gen.hour_series GOCREATE FUNCTION gen.hour_series(@n bigint, @from datetime2(7), @step tinyint = 1)RETURNS datetime2(7)WITH schemabindingASBEGIN RETURN DATEADD(hour, (@n - 1) * @step, @from);ENDGOIF object_id(N'gen.ints', N'FN') IS NOT NULL DROP FUNCTION gen.ints GOCREATE FUNCTION gen.ints(@n bigint, @startValue tinyint = 1, @max bigint = 1000000, @step int = 1)RETURNS bigintWITH schemabindingASBEGIN RETURN @startValue + ((@step * (@n - 1)) % @max);ENDGOIF object_id(N'gen.decimals', N'FN') IS NOT NULL DROP FUNCTION gen.decimals GOCREATE FUNCTION gen.decimals(@n bigint, @startValue DECIMAL(19, 6) = 1.00, @max DECIMAL(19, 6) = 1000000.0, @step int = 1)RETURNS DECIMAL(19, 6)WITH schemabindingASBEGIN RETURN @startValue + ((@step * (@n - 1)) % @max);ENDgoIF object_id(N'gen.strings', N'FN') IS NOT NULL DROP FUNCTION gen.strings GOCREATE FUNCTION gen.strings(@n bigint, @minLen int = 1, @maxLen int = 100)RETURNS varchar(MAX)WITH schemabindingASBEGIN -- Credits to Chris Judge from: --http://stackoverflow.com/questions/1324063/generating-random-strings-with-t-sql -- Changes from his code: Made it working from within a function DECLARE @length int, @CharPool varchar(1000), @PoolLength int, @LoopCount int, @RandomString varchar(MAX) ; SET @Length = (@n % @maxLen) + @minLen -- define allowable character explicitly - easy to read this way an easy to -- omit easily confused chars like l (ell) and 1 (one) or 0 (zero) and O (oh) SET @CharPool = 'abcdefghijkmnopqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ123456789' SET @PoolLength = DataLength(@CharPool) SET @LoopCount = 0 SET @RandomString = '' WHILE (@LoopCount < @Length) BEGIN SELECT @RandomString = @RandomString + SUBSTRING(@Charpool, CONVERT(int, (@LoopCount * @N) % @PoolLength), 1) SELECT @LoopCount = @LoopCount + 1 END RETURN substring(@RandomString, 1, @maxLen);ENDgo