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關於動態where子句

2012-01-04 147 views
0

這是我的SQL：關於動態where子句

DECLARE @tbl_WhereClause AS TABLE (
    SearchField VARCHAR(255), 
    Operator VARCHAR(25), 
    ConditionData VARCHAR(MAX), 
    MatchCase BIT, 
    TableName VARCHAR(MAX) 
) 

DECLARE @WhereClause_XML XML 
SET @WhereClause_XML = 
'<NewDataSet> 
    <param> 
    <SearchField>EmployeeID</SearchField> 
    <FilterCondition> >= </FilterCondition> 
    <ConditionData>201</ConditionData> 
    <MatchCase>0</MatchCase> 
    <Table>Employee</Table> 
</param> 
<param> 
    <SearchField>DeptID</SearchField> 
    <FilterCondition> = </FilterCondition> 
    <ConditionData>AC01</ConditionData> 
    <MatchCase>1</MatchCase> 
    <Table>Department</Table> 
</param> 
<param> 
    <SearchField>Dob</SearchField> 
    <FilterCondition> >= </FilterCondition> 
    <ConditionData>20120104</ConditionData> 
    <MatchCase>0</MatchCase> 
    <Table>Employee</Table> 
</param> 
</NewDataSet>' 

INSERT INTO @tbl_WhereClause (SearchField, Operator, ConditionData, MatchCase,TableName) 
SELECT A.B.value('(SearchField)[1]', 'VARCHAR(255)') SearchField, 
    A.B.value('(FilterCondition)[1]', 'VARCHAR(25)') Operator, 
    A.B.value('(ConditionData)[1]', 'VARCHAR(MAX)') ConditionData, 
    A.B.value('(MatchCase)[1]', 'BIT') MatchCase, 
    A.B.value('(Table)[1]', 'VARCHAR(MAX)') TableName 
FROM @WhereClause_XML.nodes('/NewDataSet/param') A(B) 

SELECT * FROM @tbl_WhereClause

如何與系統表連接的每個字段來獲取每個字段的數據類型和顯示。請運行腳本並在SQL中進行必要的更改。感謝

來源

2012-01-04 Thomas

回答

2

試試這個驗證表和列，並與它們的屬性，以使其類型：

DECLARE @tbl_WhereClause AS TABLE (
SearchField VARCHAR(255), 
Operator VARCHAR(25), 
ConditionData VARCHAR(MAX), 
MatchCase BIT, 
TableName VARCHAR(MAX), 
Validity VARCHAR(100), 
ColumnType VARCHAR(128), 
ColumnPrecision INT, 
ColumnScale INT, 
ColumnNullable bit 
) 

DECLARE @WhereClause_XML XML 
SET @WhereClause_XML = ' 
<NewDataSet> 
<param> 
<SearchField>EmployeeID</SearchField> 
<FilterCondition> >= </FilterCondition> 
<ConditionData>201</ConditionData> 
<MatchCase>0</MatchCase> 
<Table>Employee</Table> 
</param> 
<param> 
<SearchField>DeptID</SearchField> 
<FilterCondition> = </FilterCondition> 
<ConditionData>AC01</ConditionData> 
<MatchCase>1</MatchCase> 
<Table>Department</Table> 
</param> 
<param> 
<SearchField>Dob</SearchField> 
<FilterCondition> >= </FilterCondition> 
<ConditionData>20120104</ConditionData> 
<MatchCase>0</MatchCase> 
<Table>Employee</Table> 
</param> 
</NewDataSet>' 

INSERT INTO @tbl_WhereClause (SearchField, Operator, ConditionData, MatchCase,TableName, Validity, ColumnType, ColumnPrecision, ColumnScale, ColumnNullable) 
SELECT A.B.value('(SearchField)[1]', 'VARCHAR(255)') SearchField, 
    A.B.value('(FilterCondition)[1]', 'VARCHAR(25)') Operator, 
    A.B.value('(ConditionData)[1]', 'VARCHAR(MAX)') ConditionData, 
    A.B.value('(MatchCase)[1]', 'BIT') MatchCase, 
    A.B.value('(Table)[1]', 'VARCHAR(MAX)') TableName, 
    CASE WHEN t.NAME+c.NAME IS NULL THEN 'invalid' ELSE 'valid' END , 
    ty.NAME, 
    c.PRECISION, 
    c.Scale, 
    c.Is_Nullable 
FROM @WhereClause_XML.nodes('/NewDataSet/param') A(B) 
LEFT JOIN sys.tables t ON t.name = A.B.value('(Table)[1]', 'VARCHAR(MAX)') 
LEFT JOIN sys.COLUMNS c ON T.OBJECT_ID = c.OBJECT_ID AND c.name = A.B.value('(SearchField)[1]', 'VARCHAR(255)') 
LEFT JOIN sys.types ty ON c.system_type_id = ty.system_type_id 

SELECT * FROM @tbl_WhereClause

來源

2012-01-04 09:02:38

+0

更新與類型 – 2012-01-04 09:41:16

+0

感謝很多偉大的工作....新年快樂。 – Thomas 2012-01-04 09:59:18

0

下面是完整的解決方案。

/*   
--XML DATA SAMPLE   
DECLARE @xmlvar xml  
SET @xmlvar='  
<NewDataSet>  
    <param>  
    <SearchField>JID</SearchField>  
    <FilterCondition>%</FilterCondition>  
    <ConditionData>4000</ConditionData>  
    <MatchCase>0</MatchCase>  
    <Table>BBAJobs</Table>  
    </param>  
    <param>  
    <SearchField>Specialist</SearchField>  
    <FilterCondition>=</FilterCondition>  
    <ConditionData>Nigel Graham</ConditionData>  
    <MatchCase>0</MatchCase>  
    <Table>BBAJobs</Table>  
    </param>  
</NewDataSet>'   
exec GenericSearch 'JobAdder','vwAdvSrch',@xmlvar,'AND'  
*/   

--For generic search   

ALTER PROCEDURE [dbo].[GenericSearch]   
(  
@ModuleName VARCHAR(100),   
@ViewName VARCHAR(100),   
@WhereClause_XML XML,   
@LogicalOperator VARCHAR(3)   
)   
AS   

BEGIN 
DECLARE @pop varchar(max)  
SET @pop='not true'   

DECLARE @SearchField VARCHAR(255),   
@Operator VARCHAR(25),   
@ConditionData VARCHAR(MAX),   
@MatchCase BIT,   
@TableName VARCHAR(MAX),   
@Validity VARCHAR(100),   
@ColumnType VARCHAR(128),   
@ColumnPrecision INT,   
@ColumnScale INT,   
@ColumnNullable bit,   
@WhereClause VARCHAR(MAX),   
@SQL NVARCHAR(MAX)   


DECLARE @tbl_WhereClause AS TABLE   
(  
SearchField VARCHAR(255),   
Operator VARCHAR(25),   
ConditionData VARCHAR(MAX),   
MatchCase BIT,   
TableName VARCHAR(MAX),   
Validity VARCHAR(100),   
ColumnType VARCHAR(128),   
ColumnPrecision INT,   
ColumnScale INT,   
ColumnNullable bit   
)   


INSERT INTO @tbl_WhereClause (SearchField, Operator, ConditionData, MatchCase,TableName,   
Validity, ColumnType, ColumnPrecision, ColumnScale, ColumnNullable)   

SELECT A.B.value('(SearchField)[1]', 'VARCHAR(255)') SearchField,   
    A.B.value('(FilterCondition)[1]', 'VARCHAR(25)') Operator,   
    A.B.value('(ConditionData)[1]', 'VARCHAR(MAX)') ConditionData,   
    A.B.value('(MatchCase)[1]', 'BIT') MatchCase,   
    A.B.value('(Table)[1]', 'VARCHAR(MAX)') TableName,   
    CASE WHEN t.NAME+c.NAME IS NULL THEN 'invalid' ELSE 'valid' END ,   
    ty.NAME,   
    c.PRECISION,   
    c.Scale,   
    c.Is_Nullable   
FROM @WhereClause_XML.nodes('/NewDataSet/param') A(B)   
LEFT JOIN sys.tables t ON t.name = A.B.value('(Table)[1]', 'VARCHAR(MAX)')   
LEFT JOIN sys.COLUMNS c ON T.OBJECT_ID = c.OBJECT_ID AND c.name = A.B.value('(SearchField)[1]', 'VARCHAR(255)')   
LEFT JOIN sys.types ty ON c.system_type_id = ty.system_type_id   

SET @WhereClause= ' WHERE 1=1'   
SET @SQL = ''   
DECLARE SearchCursor CURSOR FOR   
SELECT * FROM @tbl_WhereClause   

OPEN SearchCursor   

FETCH NEXT FROM SearchCursor   
INTO @SearchField, @Operator,@ConditionData,@MatchCase,@TableName,@Validity,@ColumnType,@ColumnPrecision,@ColumnScale,@ColumnNullable   

WHILE @@FETCH_STATUS = 0   
BEGIN   

IF CHARINDEX('INT', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN  
SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END  
END 
---new 
ELSE IF CHARINDEX('NTEXT', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as nvarchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as nvarchar(max)) + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as nvarchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as nvarchar(max)) + space(1)[email protected]+space(1)[email protected]   
    END  
END   
    ELSE IF CHARINDEX('VARCHAR', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)[email protected]+space(1)[email protected]   
    END  
END   
    ELSE IF CHARINDEX('NVARCHAR', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + CAST(@SearchField as varchar(max)) + space(1)[email protected]+space(1)[email protected]   
    END  
END   
---new  
ELSE IF CHARINDEX('NUMERIC', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END  
END   
ELSE IF CHARINDEX('BIT', UPPER(@ColumnType)) > 0   
BEGIN  
    IF CHARINDEX('TRUE', UPPER(@ConditionData)) > 0   
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)+'1'   
    END  
    ELSE IF CHARINDEX('FALSE', UPPER(@ConditionData)) > 0   
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)+'0'   
    END  
    ELSE  
    BEGIN  
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END  
END   
ELSE IF CHARINDEX('DECIMAL', UPPER(@ColumnType)) > 0 
BEGIN  
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN   
SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END   
END  
ELSE IF CHARINDEX('FLOAT', UPPER(@ColumnType)) > 0   
BEGIN   
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN   
SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END  
END   
ELSE IF CHARINDEX('REAL', UPPER(@ColumnType)) > 0   
BEGIN 
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN   
SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]  
    END  
END   
ELSE IF CHARINDEX('MONEY', UPPER(@ColumnType)) > 0   
BEGIN  
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE  
    BEGIN   
SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+space(1)[email protected]   
    END  
END   
ELSE IF CHARINDEX('DATE', UPPER(@ColumnType)) > 0   
BEGIN 
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + 'CONVERT(varchar,'[email protected]+',112)' + space(1)[email protected]+'CONVERT(varchar,'''[email protected]+''',112)'   
END   
ELSE IF CHARINDEX('CHAR', UPPER(@ColumnType)) > 0   
BEGIN  
    IF @MatchCase = 0   
    BEGIN   
    IF RTRIM(LTRIM(@Operator)) = '%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = 'S%'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+''''+REPLACE(@ConditionData, '''', '''''') +'%'''   
    END   
    ELSE IF RTRIM(LTRIM(@Operator)) = '%S'   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)+' LIKE '+'''%'+REPLACE(@ConditionData, '''', '''''') +''''   
    END   
    ELSE   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + @SearchField + space(1)[email protected]+'''' + REPLACE(@ConditionData, '''', '''''') + ''''   
    END   
    END   
    ELSE   
    IF @MatchCase = 1   
    BEGIN   
    SET @WhereClause = @WhereClause + space(1)+ @LogicalOperator + space(1) + 'BINARY_CHECKSUM('[email protected]+')' + space(1)[email protected]+'BINARY_CHECKSUM('''+ REPLACE(@ConditionData, '''', '''''') +''')'   
    END   
END   

FETCH NEXT FROM SearchCursor   
INTO @SearchField, @Operator,@ConditionData,@MatchCase,@TableName,@Validity,@ColumnType,@ColumnPrecision,@ColumnScale,@ColumnNullable   
END   

CLOSE SearchCursor   
DEALLOCATE SearchCursor   

SELECT @SQL = @SQL + FieldName + ' as [' + FieldDesc + '], ' FROM SearchMaster WHERE ModuleName = @ModuleName   
SET @SQL = 'SELECT '+ left(@SQL, len(RTRIM(LTRIM(@SQL)))-1) + ' FROM '+ @ViewName   
SET @SQL = @SQL + @WhereClause  

--exec sp_executesql @SQL   
exec(@SQL)   
--select @SQL 
--PRINT @SQL   
END

來源

2015-07-27 13:30:38 Mou

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