Question

我在下面有一个SQL表（注意：用于使其更易于阅读的引号

Table1.Description  
"HOUSING,WRAP RECESSED"  
"HOUSING,ASSEMBLY 2-FEED"  
"LENS,FLUSH SUS"  

Table2.Abbreviations  
ASSY = ASSEMBLY  
FD = FEED  
FLUSH = FL  
HSG = HOUSING  
LENS = LNS    
RECESSED = REC

我想要更新，或者更新的东西，并创建一个新表（或者很好），Table1.Description与Table2.Abbreviations。它应该是这样的：

Table1.Description  
"HSG,WRAP REC"  
"HSG,ASSY 2-FD"  
"LNS,FL SUS"

Answer 1

一般策略是遍历每个单词/缩写对，并根据每对更新Table1.Description。我使用临时表创建了一个解决方案来说明如何执行此操作：

CREATE TABLE #table1 (descr VARCHAR(1000))
CREATE TABLE #abbr (word VARCHAR(1000), abr VARCHAR(1000), processed int)

DECLARE @word VARCHAR(1000)
DECLARE @abbr VARCHAR(1000)

INSERT INTO #table1
        ( descr )
VALUES  ( 'HOUSING,WRAP RECESSED'  -- descr - varchar(1000)

          ),
          ( 'HOUSING,ASSEMBLY 2-FEED'  -- descr - varchar(1000)

          ),
          ( 'LENS,FLUSH SUS'  -- descr - varchar(1000)

          )

INSERT INTO #abbr
        ( word, abr, processed )
VALUES  ( 'ASSEMBLY', -- word - varchar(1000)
          'ASSY'  -- abr - varchar(1000)
          ,0
          ),
          ( 'FEED', -- word - varchar(1000)
          'FD'  -- abr - varchar(1000)
          ,0
          ),
          ( 'FLUSH', -- word - varchar(1000)
          'FL'  -- abr - varchar(1000)
          ,0
          ),
          ( 'HOUSING', -- word - varchar(1000)
          'HSG'  -- abr - varchar(1000)
          ,0
          ),
          ( 'LENS', -- word - varchar(1000)
          'LNS'  -- abr - varchar(1000)
          ,0
          ),
          ( 'RECESSED', -- word - varchar(1000)
          'REC'  -- abr - varchar(1000)
          ,0
          )


WHILE EXISTS (SELECT * FROM #abbr WHERE processed = 0)
BEGIN
    SELECT TOP 1 @word = word, @abbr = abr FROM #abbr WHERE processed = 0

    UPDATE #table1
    SET descr = REPLACE(descr,@word,@abbr)

    UPDATE #abbr
    SET processed = 1
    WHERE word = @word AND abr = @abbr
END

SELECT * FROM #table1

Answer 2

试试这样：

缩写表

CREATE FUNCTION dbo.ReplaceAbbreviations(@string VARCHAR(MAX))
RETURNS VARCHAR(MAX) AS
BEGIN
    SELECT @string=REPLACE(@string,LongTerm,ShortTerm)
    FROM Abbreviations;

    RETURN @string;
END
GO

执行魔术的功能

CREATE TABLE YourDescription (LongDescription VARCHAR(MAX));
INSERT INTO YourDescription VALUES
 ('HOUSING,WRAP RECESSED')
,('HOUSING,ASSEMBLY 2-FEED')  
,('LENS,FLUSH SUS');
GO

包含字符串的表格

SELECT LongDescription
      ,dbo.ReplaceAbbreviations(LongDescription) AS ShortDescription
FROM YourDescription;
GO

使用函数

进行简单的选择

DROP TABLE YourDescription;
DROP FUNCTION dbo.ReplaceAbbreviations;
DROP TABLE Abbreviations;

清理测试场景

LongDescription            ShortDescription
HOUSING,WRAP RECESSED      HSG,WRAP REC
HOUSING,ASSEMBLY 2-FEED    HSG,ASSY 2-FD
LENS,FLUSH SUS             LNS,FL SUS

结果

{{1}}

用缩写列表SQL替换多个字符短语

2 个答案: