如何使用 SSIS 中的键将几列更改为另一列 table？

Question

我有：

Collisions{PK_id, cashLoss, deaths, city, state, county}

我要：

Collisions{PK_id, cashLoss, deaths, #IdLocalization}
Localization{#LocalizationID(autoincremental), city, state, county} // but {city, state, county} must be distinct

如何在 SSIS 和 SQL 中实现？

例如

我可以在 table Localization 中设置 id 为 autoincremental，但是如何将此 ID 放入 Table 与 SSIS 冲突？

Answer 1

您可以使用 SQL 脚本如下：

/*******  DATA PREPARATION *****/

IF OBJECT_ID('tempdb..#Collisions') IS NOT NULL
DROP TABLE #Collisions

IF OBJECT_ID('tempdb..#Localization') IS NOT NULL
DROP TABLE #Localization

CREATE TABLE #Collisions (PK_ID INT, cashLoss INT, deaths INT, city varchar(20), state varchar(20), country varchar(20))
CREATE TABLE #Localization (LocalizationId INT IDENTITY (1, 1), city varchar(20), state varchar(20), country varchar(20))

INSERT INTO #Collisions (PK_ID, cashLoss, deaths, city, state, country)
SELECT PK_ID, cashLoss, deaths, city, state, country
FROM (VALUES
(1, 3, 6, 'CityA', 'StateA', 'CountryA' ),
(2, 56, 1, 'CityB', 'StateA', 'CountryA'),
(3, 54, 0, 'CityA', 'StateA', 'CountryA'),
(4, 3, 0, 'CityB', 'StateA', 'CountryA' ),
(5, 23, 0, 'CityA', 'StateB', 'CountryB')) AS T(PK_ID, cashLoss, deaths, city, state, country)



/*******  CREATE/UPDATE TABLES *****/

--Create Localization table with unique values
INSERT INTO #Localization (city, state, country)
SELECT DISTINCT city, state, country
FROM #Collisions

--Add new LocalizationId column to #Collisions
ALTER TABLE #Collisions ADD LocalizationId INT 

--Would be nice to add foreign key on #Collisions.LocalizationId

--Update LocalizationId
UPDATE C
    SET LocalizationId = L.LocalizationId
FROM #Collisions AS C
INNER JOIN #Localization AS L
    ON L.city = C.city
    AND L.state = C.state
    AND L.country = C.country

--Drop 3 columns
ALTER TABLE #Collisions DROP COLUMN city, state, country

--RESULT
SELECT * 
FROM #Collisions

如何使用 SSIS 中的键将几列更改为另一列 table？

How change few columns to another table with key in SSIS?

sql

sql-server

ssis