как использовать хранимую процедуру NormalizeChars внутри хранимой процедуры searchWord

Question

Я хочу удалить диакритические знаки из этой функции

ALTER PROCEDURE [dbo].[SearchWord] (@Word            NVARCHAR(50),
                                    @PageNumber      INT,
                                    @ProductsPerPage INT,
                                    @HowManyResults  INT OUTPUT)
AS
  SET @Word = '%' + RTRIM(@Word) + '%';

  DECLARE @Results TABLE (
    ProductsId          INT,
    ProductsCode        NVARCHAR(250),
    ProductsDesc        NVARCHAR(MAX),
    ProductsIngredients NVARCHAR(MAX),
    ProductsName        NVARCHAR(250),
    ProductsPhoto       NVARCHAR(MAX),
    ProductsPrice       MONEY,
    ProductsWeight2     FLOAT,
    RowNumber           INT)

  -- Obtain the matching products
  INSERT INTO @Results
  SELECT DISTINCT T1.ProductsID,
                  T1.ProductsCode,
                  LOWER(T1.ProductsDesc)                      asProductsDesc,
                  T1.ProductsIngredients,
                  LOWER(T1.ProductsName)                      AS ProductsName,
                  T1.ProductsPhoto,
                  T1.ProductsPrice,
                  T1.ProductsWeight2,
                  ROW_NUMBER() OVER(ORDER BY T1.ProductsName) RowNumber
  FROM   (SELECT ProductsID,
                 ProductsCode,
                 LOWER(ProductsDesc) AS ProductsDesc,
                 ProductsIngredients,
                 LOWER(ProductsName) AS ProductsName,
                 ProductsPhoto,
                 ProductsPrice,
                 ProductsWeight2
          FROM   Products
          WHERE  ProductsName LIKE @Word) AS T1
         FULL OUTER JOIN (SELECT *
                          FROM   Products
                          WHERE  ProductsDesc LIKE @Word) AS T2
           ON T1.ProductsID = T2.ProductsID
  ORDER  BY T1.ProductsPrice

  DELETE FROM @Results
  WHERE  NULLIF([ProductsName], '') IS NULL

  SELECT @HowManyResults = COUNT(*)
  FROM   @Results

  INSERT INTO @Results
  SELECT DISTINCT ProductsId,
                  ProductsCode,
                  ProductsDesc,
                  ProductsIngredients,
                  LOWER(ProductsName) AS ProductsName,
                  ProductsPhoto,
                  ProductsPrice,
                  ProductsWeight2,
                  RowNumber
  FROM   @Results

  SELECT DISTINCT ProductsId,
                  ProductsCode,
                  ProductsDesc,
                  ProductsIngredients,
                  LOWER(ProductsName) AS ProductsName,
                  ProductsPhoto,
                  ProductsPrice,
                  ProductsWeight2,
                  RowNumber
  FROM   @Results R
  WHERE  R.RowNumber > ( @PageNumber - 1 ) * @ProductsPerPage
         AND R.RowNumber <= @PageNumber * @ProductsPerPage
  ORDER  BY R.ProductsPrice ASC  

с помощью этой процедуры

ALTER PROCEDURE normalizeChars 
(@NAME NVARCHAR(100)) 
AS
BEGIN
  DECLARE @TempString NVARCHAR(100)
  SET @TempString = @NAME 
  SET @TempString = LOWER(@TempString)
  SET @TempString =  REPLACE(@TempString,'à', 'a')
  SET @TempString =  REPLACE(@TempString,'è', 'e')
  SET @TempString =  REPLACE(@TempString,'é', 'e')
  SET @TempString =  REPLACE(@TempString,'ì', 'i')
  SET @TempString =  REPLACE(@TempString,'ò', 'o')
  SET @TempString =  REPLACE(@TempString,'ù', 'u')
  SET @TempString =  REPLACE(@TempString,'ç', 'c')
  SET @TempString =  REPLACE(@TempString,'''', '')
  SET @TempString =  REPLACE(@TempString,'`', '')
  SET @TempString =  REPLACE(@TempString,'-', '')
  SET @TempString =  REPLACE(@TempString,'ά','α')
  SET @TempString =  REPLACE(@TempString,'έ','ε')
  SET @TempString =  REPLACE(@TempString,'ί','ι')
  SET @TempString =  REPLACE(@TempString,'ό','ο')
  SET @TempString =  REPLACE(@TempString,'ή','η')
  SET @TempString =  REPLACE(@TempString,'ύ','υ')
  RETURN @TempString
END

on ProductsName and ProductsDesc

возможно ли это и как?

Answer 1

Вы говорите, что находитесь на Greek_CI_AI.В этом случае большинство ваших сопоставлений уже происходит (только верхние 3 этого не делают).

;WITH T(col1,col2) AS
(
  SELECT N'''',N'' UNION ALL
  SELECT N'`',N'' UNION ALL
  SELECT N'-',N'' UNION ALL

  SELECT N'à',N'a' UNION ALL
  SELECT N'è',N'e' UNION ALL
  SELECT N'é',N'e' UNION ALL
  SELECT N'ì',N'i' UNION ALL
  SELECT N'ò',N'o' UNION ALL
  SELECT N'ù',N'u' UNION ALL
  SELECT N'ç',N'c' UNION ALL
  SELECT N'ά',N'α' UNION ALL
  SELECT N'έ',N'ε' UNION ALL
  SELECT N'ί',N'ι' UNION ALL
  SELECT N'ό',N'ο' UNION ALL
  SELECT N'ή',N'η' UNION ALL
  SELECT N'ύ',N'υ'
)
SELECT *
FROM T 
WHERE col1<>col2  COLLATE Greek_CI_AI 

Возвращает

col1 col2
---- ----
'    
`    
-    

Также вам не нужно использовать LOWER какпараметры сортировки нечувствительны к регистру.

Если вам нужно игнорировать оставшиеся 3 символа в поиске, вы можете использовать скалярный UDF, как показано ниже

CREATE FUNCTION dbo.normalizeChars 
(@Name NVARCHAR(100)) 
RETURNS NVARCHAR(100)
WITH SCHEMABINDING, RETURNS NULL ON NULL INPUT
AS 
BEGIN
  SET @Name =  REPLACE(@Name,'''', '')
  SET @Name =  REPLACE(@Name,'`', '')
  SET @Name =  REPLACE(@Name,'-', '')
  RETURN @Name
END