tsql

问题 I am trying to update rows in table based on JSON I have. JSON has the following structure: "sensors": [ { "id": "5afd7160f16819f11814f6e2", "num": 0, "name": "AC01", "enabled": true, "unit": "Volt AC Phase 1", "desc": "NAMsdafE", "lt_disaster": 1, "gt_disaster": 1, "lt_high": 1, "gt_high": 1, "lt_average": 1, "gt_average": 1 },... Table dbo.sensors has same structure + few more columns. To insert such JSON object, not array, into table, I would do it this way: INSERT INTO dbo.sensors (......

问题 Is there a way to identify local variables that have been created (or even created and set to a value), but are never used again? I'm thinking along the lines of when an IDE will underline such variables with a squiggly line. If this isn't something that can be enabled within SSMS, are there any add-ins that do this? (Particularly interested in SQL Server 2008 R2, if it matters) Thanks for the insight. 回答1: ApexSQL Refactor, a free SSMS and VS SQL formatting and refactoring add-in, has a

问题 How can I unzip a varbinary(max) value in a stored procedure? I'd like to implement or invoke a gunzip algorithm within TSQL code, preferably without enabling the CLR. 回答1: Look into sp_OACreate http://msdn.microsoft.com/en-us/library/ms189763.aspx sp_oamethod http://msdn.microsoft.com/en-us/library/ms174984.aspx You can write the value as a file using file system object, then use a command line gunzip program on it and the read the file using FSO back. Yes this is not practical but I am not

问题 Consider a SQL Server database and its two stored procs: *1. A proc that performs 3 important things in a transaction: Create a customer, call a sproc to perform another insert, and conditionally insert a third record with the new identity. BEGIN TRAN INSERT INTO Customer(CustName) (@CustomerName) SELECT @NewID = SCOPE_IDENTITY() EXEC CreateNewCustomerAccount @NewID, @CustomerPhoneNumber IF @InvoiceTotal > 100000 INSERT INTO PreferredCust(InvoiceTotal, CustID) VALUES (@InvoiceTotal, @NewID)

问题 Using SQL Server 2005 Table1 ID Intime Outtime 001 00.21.00 00.48.00 002 08.23.00 13.45.00 003 00.34.00 00.18.00 I need to display the time time like 30 minutes or 1 Hours, it should display a roundoff time Expected Output ID Intime Outtime 001 00.30.00 01.00.00 002 08.30.00 14.00.00 003 01.00.00 00.30.00 How to make a query for the roundoff time. 回答1: You can round the current date to 30 minutes like: select dateadd(mi, datediff(mi,0,getdate())/30*30, 0) Explanation: this takes the number of

问题 I've been tasked with extracting some data from an SQL Server 2000 database into a flat format on disk. I've little SQL Server experience. There is a table which contains files stored in an "IMAGE" type column, together with an nvarchar column storing the filename. It looks like there are numerous types of files stored in the table: Word docs, XLS, TIF, txt, zip files, etc. I'm trying to extract just one row using BCP, doing something like this: bcp "select file from attachments where id =

问题 I have a query that gives me all customer's and their last three order dates. EX: CustomerId DateOrdered 167 2006-09-16 01:25:38.060 167 2006-09-21 13:11:53.530 171 2006-08-31 15:19:22.543 171 2006-09-01 13:30:54.013 171 2006-09-01 13:34:36.483 178 2006-09-04 11:36:19.983 186 2006-09-05 12:50:27.153 186 2006-09-05 12:51:08.513 I want to know if there is a way for me to pivot it to display like this: [CustomerId] [Most Recent] [Middle] [Oldest] '167' '2006-09-21 13:11:53.530' '2006-09-16 01:25

问题 I have a query that gives me all customer's and their last three order dates. EX: CustomerId DateOrdered 167 2006-09-16 01:25:38.060 167 2006-09-21 13:11:53.530 171 2006-08-31 15:19:22.543 171 2006-09-01 13:30:54.013 171 2006-09-01 13:34:36.483 178 2006-09-04 11:36:19.983 186 2006-09-05 12:50:27.153 186 2006-09-05 12:51:08.513 I want to know if there is a way for me to pivot it to display like this: [CustomerId] [Most Recent] [Middle] [Oldest] '167' '2006-09-21 13:11:53.530' '2006-09-16 01:25

问题 I am collecting data from a t-sql stored procedure to import into c# program. I would like to narrow down the data first. I have data that has three field that describes the three values that follows them. I need to find only the fields that have one of a dozen keywords in the description. I was using something that UNION all the fields with values, then ... AND ( TEXT1234.AccountValue LIKE '%word1%' OR TEXT2345.AccountValue LIKE '%word1%' OR TEXT3456.AccountValue LIKE '%word1%' OR TEXT1234

问题 I have 4 SQL server(2008 version) tables 1) USER- to store user information (Fields : UserId,UserName) 2) FILES - to store files uploaded by user (FileId,FileName,UserId) 3) PHOTOS -to store files uploaded by user (PhotoId,PhotoName,UserId) 4) GROUPS= to store groups created by user ( GroupId,GroupName,UserId) Now I want to get a USER record with id=5 along with Total number of Files uploaded by userid 5,Total Photos uploaded by user id 5,Total groups created by userid 5.Can i get all these