如何遍历数据库中的表，然后根据条件遍历这些表行？

Question

我正在处理 AdventureWorks2008R2 数据库，我试图弄清楚是否有一种方法可以遍历该数据库中的所有 table，然后给定一个条件来遍历其中的行table 的特定列？

目前我有

SELECT DISTINCT
INFORMATION_SCHEMA.COLUMNS.ORDINAL_POSITION,TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME
 FROM INFORMATION_SCHEMA.COLUMNS 
WHERE COLUMN_NAME LIKE ('%date%') AND COLUMN_NAME Not LIKE '%JobCandidate%'
;

从这里开始，我想做的是浏览这些 table，然后根据给定条件更改它们的行。

在非 SQL 代码和松散的伪代码中，它可能类似于

FOR TABLES 
SELECT A TABLE WITH A COLUMN THAT HAS A DATE IN IT 
FOR COLUMN_WITH_DATE_HEADER
IF ROW HAS DATE GIVEN SOME CONDITION 
UPDATE ROW IN THAT TABLE

有人可以帮忙吗？

提前致谢！

更新

这是我根据@Mars 解决方案创建的代码。

SELECT DISTINCT
IDENTITY(int,1,1) AS SN,
INFORMATION_SCHEMA.COLUMNS.ORDINAL_POSITION
 , TABLE_SCHEMA
 , TABLE_NAME
 , COLUMN_NAME
INTO #temptable
FROM INFORMATION_SCHEMA.COLUMNS 
WHERE COLUMN_NAME LIKE ('%date%') 
AND COLUMN_NAME Not LIKE '%JobCandidate%' AND 
COLUMN_NAME NOT LIKE '%BirthDate%';

  DECLARE @start INT=1
, @end INT=0
, @query NVARCHAR(MAX)='';
DECLARE @conditions NVARCHAR(MAX)='' ;


SELECT @end=MAX(SN)
FROM #temptable
WHILE (@start<=@end)
BEGIN
    SELECT  
    @conditions = ' WHERE ' + 'YEAR('+ COLUMN_NAME +')' + ' < 2009',
    @query= 'UPDATE '+TABLE_SCHEMA+'.' 
            +TABLE_NAME +' SET '+ COLUMN_NAME
            +' = dateadd(YEAR,8,' + COLUMN_NAME + ')'      
    FROM #temptable
    WHERE SN =@start
    EXEC (@query)
    SET @start+=1
END

DROP TABLE #temptable

Answer 1

您需要设置更新所需的日期和检查变量 @updatatingDate 和 @conditions

的条件

SELECT DISTINCT
IDENTITY(int,1,1) AS SN,
INFORMATION_SCHEMA.COLUMNS.ORDINAL_POSITION
 , TABLE_SCHEMA
 , TABLE_NAME
 , COLUMN_NAME
INTO #temptable
FROM INFORMATION_SCHEMA.COLUMNS 
WHERE COLUMN_NAME LIKE ('%date%') 
AND COLUMN_NAME Not LIKE '%JobCandidate%';

  DECLARE @start INT=1
, @end INT=0
, @query NVARCHAR(MAX)=''
, @updatatingDate NVARCHAR(100)='2017-04-04'
, @conditions NVARCHAR(MAX)='1=1'

SELECT @end=MAX(SN)
FROM #temptable
WHILE (@start<=@end)
BEGIN
    SELECT 
    @query= 'UPDATE '+TABLE_SCHEMA+'.' 
            +TABLE_NAME +' SET '+ COLUMN_NAME
            +' ='''+@updatatingDate+''' WHERE '
            +@conditions
    FROM #temptable
    WHERE SN =@start
    EXEC (@query)
    SET @start+=1
END
--DROP TABLE #temptable;

如何遍历数据库中的表，然后根据条件遍历这些表行？

How do I iterate through tables in a database then those tables rows based on a condition?

sql

sql-server-2008

adventureworks