tsql

问题 I'm learning how to read the actual execution plan in SQL Server. I have noticed that SQL Server tends to represent intermediate value used in the physical query plan as e.g. expr1006 , expr1007 etc. (i.e. expr followed by a number). Here is a screenshot. Notice near the bottom, the expressions expr1006, expr1008, expr1009 listed in the section output list . It it possible to find out what they really represent? 回答1: Right click the compute scalar and choose "properties". Look in the "Defined

问题 I'm learning how to read the actual execution plan in SQL Server. I have noticed that SQL Server tends to represent intermediate value used in the physical query plan as e.g. expr1006 , expr1007 etc. (i.e. expr followed by a number). Here is a screenshot. Notice near the bottom, the expressions expr1006, expr1008, expr1009 listed in the section output list . It it possible to find out what they really represent? 回答1: Right click the compute scalar and choose "properties". Look in the "Defined

问题 I want to create backup SQL tables using variable names. something along the lines of DECLARE @SQLTable Varchar(20) SET @SQLTable = 'SomeTableName' + ' ' + '20100526' SELECT * INTO quotename(@SQLTable) FROM SomeTableName but i'm getting Incorrect syntax near '@SQLTable'. It's just part of a small script for maintence so i don't have to worry about injections. 回答1: DECLARE @MyTableName nvarchar(20); DECLARE @DynamicSQL nvarchar(1000); SET @MyTableName = "FooTable"; SET @DynamicSQL = N'SELECT *

问题 I want to create backup SQL tables using variable names. something along the lines of DECLARE @SQLTable Varchar(20) SET @SQLTable = 'SomeTableName' + ' ' + '20100526' SELECT * INTO quotename(@SQLTable) FROM SomeTableName but i'm getting Incorrect syntax near '@SQLTable'. It's just part of a small script for maintence so i don't have to worry about injections. 回答1: DECLARE @MyTableName nvarchar(20); DECLARE @DynamicSQL nvarchar(1000); SET @MyTableName = "FooTable"; SET @DynamicSQL = N'SELECT *

问题 In a different question, I asked about all possible 3-way combinations of a table, assuming that there are 3 articles. In this question, I would like to further extend the problem to return all n-way combinations of a table with n distinct articles. One article can have multiple suppliers. My goal is to have groups of combinations with each group having each article. Below is a sample table but keep in mind that there could be more than those 3 articles. +---------+----------+ | Article |

问题 I am new to SQL, I have a table like this. Below is the query : select gc.GC_Name, dt.GC_SectorType, dt.ageing, sum(cast(dt.[Brokerage Debtors] as numeric)) as Brokerage_Amt, dt.divisionalofficename from [AR].[Fact_Brokerage_Debt] dt inner join AUM.DIM_BUSINESS_TYPE BT on BT.Business_Type_WId_PK = dt.BusinessType_WID inner join aum.Dim_GroupCompany gc on dt.insurer_Wid = gc.GC_WID where bt.Business_Type_Wid in (4, 8, 10) and dt.ageing <> '<30' and cast(dt.[Brokerage Debtors] as numeric) > 0

问题 I have a table called sickness which is a record of when an employee is off work sick. It looks like this: Date_Sick Employee_Number ---------- ---------------- 2020-06-08 001 2020-06-10 001 2020-06-11 001 2020-06-12 001 2020-06-08 002 2020-06-09 002 What I'm trying to do is add a new column with a unique ID to identify a unique instance of absence. A unique instance of absence is one that runs in consecutive weekdays with no breaks. Hence my output table should look like this: Date_Sick

问题 I am new to SQL, I have a table like this. Below is the query : select gc.GC_Name, dt.GC_SectorType, dt.ageing, sum(cast(dt.[Brokerage Debtors] as numeric)) as Brokerage_Amt, dt.divisionalofficename from [AR].[Fact_Brokerage_Debt] dt inner join AUM.DIM_BUSINESS_TYPE BT on BT.Business_Type_WId_PK = dt.BusinessType_WID inner join aum.Dim_GroupCompany gc on dt.insurer_Wid = gc.GC_WID where bt.Business_Type_Wid in (4, 8, 10) and dt.ageing <> '<30' and cast(dt.[Brokerage Debtors] as numeric) > 0

问题 I have a query to get Stock-items with it's Balance and Its receiving Transactions cods with its quantity Ordered By date, And i Want to create a column which has only the proportion Balance of every RS Code according to First in First Out Principle. As An Example in the attached sample we have StockItemId = (2222,2262,2263). and the expected result will be AS: As in Pic the Balance of every row in RS_Portion is depending on the Quantity of the Code and the sum of RS_Portion of every item

问题 How can we write a SQL function which can generate 'Sequence_Code' like AA,AB,AC....AZ. BA,BB,BC.... with the combination of last two digit of 'Current_Year' for each 'ID'. Order by 'Record_Date' For instance: If Current_Year of First row is is 2019, then Sequence_Code should be 19AA. My table is LoadData Sequence_Code ID Current_Year Record_Date NULL 310001 2019 2019-01-01 NULL 310002 2018 2018-02-22 NULL 310003 2020 2020-02-20 NULL 310004 2020 2020-02-10 Expected Output is: Sequence_Code ID