sql-server-2012

问题 I have a query for example Query1 = Select Name from table where some Criteria . Now this query returns a result set of course, what I want is to query the result set of this query, for example I only want the unique Names from the above query select Distinct(Name) from Query1 . I should mention that I know I can just use distinct in Query1 but this is just an example my real scenario is somewhat different, what I want to know is whether it's possible to query the result set of a previous

问题 I have a query for example Query1 = Select Name from table where some Criteria . Now this query returns a result set of course, what I want is to query the result set of this query, for example I only want the unique Names from the above query select Distinct(Name) from Query1 . I should mention that I know I can just use distinct in Query1 but this is just an example my real scenario is somewhat different, what I want to know is whether it's possible to query the result set of a previous

问题 I have two temporary tables #a and #b both filled with integer values. Let's say they both contain 10 rows with values 1-10. I want to create a third temporary table #c that contains every possible combination of a and b. So it would have 100 rows total with (1,1), (1,2) ... (10, 10). How would I go about doing this in SQL. The implementation I'm using is SQL Server 2012. 回答1: I think you can just do SELECT * INTO #c FROM #a,#b 回答2: Cross join will get all combinations SELECT a.Col , b.Col

问题 I am trying to populate a listbox by retrieving data from a database through sql. I have asked this question earlier but i was using a different configuration and the one i'm using now isn't giving any results. retrieving data in VB from SQL That is my old post. I will now provide the code to the newer version of my attempt. Imports System.Data.Sql Imports System.Data.SqlClient Public Class Form1 Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Dim conn As New

问题 Is there a way to create a database with SQL Server 2012 and to be able to pass it to SQL Server 2008? 回答1: I just transferred a database from 2012 to 2008 R2. (this requires both to be online and you to have setup the new database with permission to access it, I did this in an office enviroment where the 2012 database was used to create a C# application but the database it was running on was for 2008, you could do this locally I suppose and then backup the data from 2008 to a .bak file once

问题 I need to checking a column where numeric or not in SQL Server 2012. This my case code. CASE WHEN ISNUMERIC(CUST_TELE) = 1 THEN CUST_TELE ELSE NULL END AS CUSTOMER_CONTACT_NO But when the '78603D99' value is reached, it returns 1 which means SQL Server considered this string as numeric. Why is that? How to avoid this kind of issues? 回答1: Unfortunately, the ISNUMERIC() function in SQL Server has many quirks. It's not exactly buggy, but it rarely does what people expect it to when they first

问题 I recently installed Visual Studio 2010 and SQL Server 2012 on a Windows Server 2008 R2 machine - (including all updates/Service Packs). When attempting to work on a SQL Server database from within Visual Studio, VS throws the following error: This server version is not supported. Only servers up to Microsoft SQL Server 2008 are supported I recall getting this same error a while back (on a different computer) when I updated a SQL Server 2008 instance to SQL Server 2008 R2 . The fix, back then

问题 say I have 3 values, Bill, Steve, Jack. and I want to randomly update a table with those values, eg Update contacts set firstname = ('Bill','Steve','Jack') where city = 'NY' how do I randomize these values? Thanks 回答1: You can do this with the following trick: update c set name=ca.name from contacts c outer apply(select top 1 name from (values('bill'),('steve'),('jack')) n(name) where c.id = c.id order by newid())ca; c.id = c.id is just a dummy predicate that forces sql engine to call

问题 I have a search screen where the user has 5 filters to search on. I constructed a dynamic query, based on these filter values, and page 10 results at a time. This is working fine in SQL2012 using OFFSET and FETCH , but I'm using two queries to do this. I want to show the 10 results and display the total number of rows found by the query (let's say 1000). Currently I do this by running the query twice - once for the Total count, then again to page the 10 rows. Is there a more efficient way to

问题 Scenario: I am using PowerShell on Windows Server 2012r2 to generate a Root certificate and want to use that to sign a newly created Intermediate and Web certificate in dynamic generated (and destroyed) dev/test environments. The scripts are deployed remotely, and the intent is to keep it pure PowerShell if possible. In Windows 10/2016 this is relatively easy, after generating the Root certificate: $Cert = New-SelfSignedCertificate -Signer $Root -Subject "CN=$Subject" I've generated the Root