One For The SQL Gurus: Split A Delimited Field Into Rows
Hi.
I'm trying to write an SQL Query that will take a delimited field and return each item as a row.
Example
Take the AuthorizedRoles and TabID fields from the Tabs table
AuthorizedRoles TabID
0;11;__________1
0; 15 ;17;______6
-2;____________7
I would like to return a unique record for each Authorized Role
AuthorizedRole TabID
0____________1
11___________1
0____________6
15___________6
17___________6
-2___________7
Any ideas?
Cheers
Dave
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I cannot in the life of me understand what goes wrong here... In a webapplication (C#.NET) I traced an inability to retrieve existing records to SQL Server, where I cannot do the same either. The problem is that in the parameterized query, some fields can be null, and thus when the corresponding fields in the database record are null also, they should be selected. But this won't happen for some reason. I wrote a test SQL statement that gives me the same bogus: DECLARE @institution int, @collection int, @serialnr int, @subnr nvarchar(50)SET @institution = 1 SET @collection = 1SET @serialnr = 240 SET @subnr = NULLSELECT ID, Institution, Collection, SerialNumber, SubNumber, AccessionYear, Sagsnummer, DanekraeNr, TaxonIdentified, Stratigraphy, TypeStatus, PlacementRoom, PlacementCabinet, PlacementDrawer, UnitNotesFROM SpecimensWHERE (Institution = @institution) AND (Collection = @collection) AND (SerialNumber = @serialnr) AND (SubNumber = @subnr) Now there is at least one row with corresponding fields values (1, 1, 240, null), but it won't be selected! What is wrong!?
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Select Rows With Datetime Field By Year
Hi, I have rows with a datetime column which spans many years. I am wondering is there a more simple way to select those rows where the datetime column is in a particular year. For example... where datetime_column.year = '2007' I know i can use the 'between' sql etc...but am wondering if theres something more straightforward im not aware of. Thanks..
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Inserting Values Into SQL CE 3.5 Ntext Field Is Changing All Rows...
Has anyone seen this issue before? We are running a SQL CE 3.5 database on a windows desktop. A couple of our tables have ntext fields. When we do an insert the statement updates the value for all rows, not just the one that was added. I can easily repro this with some of the online samples too. Try the following: SqlCeConnection conn = new SqlCeConnection(_sConn); conn.Open(); SqlCeCommand cmd = conn.CreateCommand(); cmd.CommandText = "CREATE TABLE BlobTable(name nvarchar(128), blob ntext);"; cmd.ExecuteNonQuery(); cmd.CommandText = "INSERT INTO BlobTable(name, blob) VALUES (@name, @blob);"; SqlCeParameter paramName = cmd.Parameters.Add("name", SqlDbType.NVarChar, 128); SqlCeParameter paramBlob = cmd.Parameters.Add("blob", SqlDbType.NText); paramName.Value = "Name1"; paramBlob.Value = "Name1 Memo"; cmd.ExecuteNonQuery(); cmd.CommandText = "INSERT INTO BlobTable(name, blob) VALUES (@name, @blob);"; SqlCeParameter paramName = cmd.Parameters.Add("name", SqlDbType.NVarChar, 128); SqlCeParameter paramBlob = cmd.Parameters.Add("blob", SqlDbType.NText); paramName.Value = "Name2"; paramBlob.Value = "Name2 Memo"; cmd.ExecuteNonQuery(); After the second execution the blob column in both rows will have the value 'Name2 Memo'. This is obviously a huge problem for us and would appreciate it if someone can explain what is happening. Seems like a bug but would like to be certain before I go the support route.
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Executing Sql Code From Text Field Or From Multiple Varchar(8000) Rows In A Table
Does anyone know of a way to execute sql code from a dynamically builttext field?Before beginning, let me state that I know this db architecture isbuilt solely for frustration and I hope to make it better soon.Unfortunately, there is never a non-crucial time in which we can do anupgrade, so we are stuck for now.Point 1:There are multiple tables: students, courses, cross-referencestudent/courses, teachers, cross-reference teacher/courses, andothers.Point 2:Yearly archiving is done by appending a 2 digit year suffix to thetable and rebuilding the table structure for the current year. Thatis, each of the tables named above has an archive table for 1999,2000, 2001, etc. This leads to many tables and a big mess whenunioning them.Point 3:A history report is run by building a big query that unions each unionof tables (students, courses, etc) by year. This query has grown toobig for a varchar(8000) field. Actually, it's too big for 2 of them.Point 4:I don't want to write code to maintain any more varchar(8000) fieldsfor this query. It should be much more easily handled with atemporary table holding each bit of yearly archive data. I have builtthis and it works fine. I have also figured out how to pull the rowsfrom that table, concatenate them, and insert the resulting lump intoa text field in another table.Point 5:I haven't figured out how to grab the 5 or so records from that tableand execute them on their own. I figured I could grab them, put theminto a text field that's big enough to hold the whole query and thenselect and execute that text field. I've had no luck with that and Ihaven't had any luck finding any references that might help me withthis problem. I keep thinking of nesting execute() calls, but thatdoesn't work.I'm open to questions, potential solutions, hints about different wayto approach the problem, anything.Many thanks in advance,Rick Caborn
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