Comment puis-je convertir cette instruction Crystal Report IF à utiliser dans une clause WHERE dans Reporting Services?

Question

Je suis en train de traduire ce Crystal Reports IF Déclaration pour une utilisation dans une clause WHERE -

{@receipt_datetime_daylight} in {?DateRange} and 
(if {?Call Sign} = "All Call Signs" Then 
    {cacs_incident_task.resource_or_class_id} = {cacs_incident_task.resource_or_class_id} 
Else If {?Call Sign} = "All Sierra Call Signs" Then 
    {cacs_incident_task.resource_or_class_id} in ["S10", "S11", "S12"] 
Else If {?Call Sign} = "All Whiskey Call Signs" Then 
    {cacs_incident_task.resource_or_class_id} in ["W01", "W02", "W03"] 
Else 
    {cacs_incident_task.resource_or_class_id} = {?Call Sign}) and 
(if {?OffenceType} = "All Offences" Then 
    {cacs_inc_type.description} = {cacs_inc_type.description} 
else 
    {cacs_inc_type.description} = {?OffenceType}) 

instructions CASE ne fonctionnent pas dans Reporting Services, donc je dois trouver pourquoi de la traduire en WHERE clause. Est-ce que quelqu'un sait un chemin?

Answer 1

vous avez trois solutions:

1- créer une requête et de mettre ces conditions dans sa clause WHERE.

2- créez un expression pour ce travail et faites cela avec. vous pouvez écrire avec le langage BASIC dessus. Vous pouvez utiliser un assembly pour cela. cela signifie que vous devez créer un dll dans votre langue préférée et l'utiliser à partir de ses méthodes dans votre rapport.

Answer 2

Après un peu de travail, voici ma solution -

/* Input Parameters */ 
Declare @StartDate datetime 
Declare @EndDate datetime 
DECLARE @CallSign varchar(50) 
DECLARE @OffenceType varchar(50) 

/* Local variables */ 
declare @CallSignClause nvarchar(1000) 
declare @OffenceTypeClause nvarchar(1000) 
declare @DateClause nvarchar(1000) 
declare @SQLSelect nvarchar(4000) 

/* Test Parameters */ 
Set @CallSign = 'All Whiskey Call Signs' 
Set @OffenceType = 'Burglary' 
Set @StartDate = { d '2010-01-01' } 
Set @EndDate = { d '2010-04-01' } 

if @CallSign = 'All Call Signs' OR @CallSign is null 
    set @CallSignClause = ' cacs_incident_task.resource_or_class_id = cacs_incident_task.resource_or_class_id' 

if @CallSign = 'All Sierra Call Signs' 
    set @CallSignClause = ' (cacs_incident_task.resource_or_class_id IN (''S10'', ''S11'', ''S12'', ''S13'', ''S14'', ''S15'', ''S16'', ''S17'', ''S18'', ''S19'', ''S20'', ''S21'', ''S22'', ''S23'', ''S24'', ''S25'', ''S26'', ''S27'', ''S28'', ''S29'', ''S30'', 
       ''S33'', ''S34'', ''S35'', ''S51'', ''S52'', ''S53'', ''S82'', ''S83''))' 

if @CallSign = 'All Whiskey Call Signs' 
    set @CallSignClause = '(cacs_incident_task.resource_or_class_id IN (''W01'', ''W02'', ''W03'', ''W04'', ''W11'', ''W12'', ''W13'', ''W14'', ''W15'', ''W22'', ''W23'', ''W31'', ''W32'', ''W33'', ''W34'', ''W42'', ''W43'', ''W44'', ''W45'', 
       ''W51'', ''W52'', ''W53'', ''W54'', ''W58'', ''W62'', ''W63'', ''W64'', ''W65'', ''W68'', ''W81'', ''W82'', ''W83'', ''W84'', ''W92'', ''W93'', ''W94'', ''W95''))' 

if (@CallSign <> 'All Call Signs') AND (@CallSign <> 'All Sierra Call Signs') AND (@CallSign <> 'All Whiskey Call Signs') AND (@CallSign is not null) 
    set @CallSignClause = ' cacs_incident_task.resource_or_class_id = ''' + @CallSign + '''' 

if @OffenceType = 'All Offences' OR @OffenceType is null 
    set @OffenceTypeClause = 'cacs_inc_type.description = cacs_inc_type.description' 
else 
    set @OffenceTypeClause = 'cacs_inc_type.description LIKE ''%' + @OffenceType + '%''' 

if @StartDate is null 
    set @DateClause = '' 
else 
    /* set @DateClause = ' ccors_offence.committed_to_date between cast(''' +left(cast(@StartDate as varchar(20)), 12) + ''' as datetime) and cast(''' +left(cast(@EndDate as varchar(20)), 12) + ''' as datetime)' */ 
    set @DateClause = ' DateAdd(dd, 0, DateDiff(dd, 0, cacs_incident_header.at_scene_date)) + DateAdd(dd, 0 - DateDiff(dd, 0, cacs_incident_header.at_scene_time), cacs_incident_header.at_scene_time) between cast(''' +left(cast(@StartDate as varchar(20)), 12) + ''' as datetime) and cast(''' +left(cast(@EndDate as varchar(20)), 12) + ''' as datetime) AND ' 

set @SQLSelect = 
'SELECT 
    cacs_incident_header."id", cacs_incident_header."receipt_date", cacs_incident_header."receipt_time", cacs_incident_header."receipt_daylight", cacs_incident_header."at_scene_date", cacs_incident_header."at_scene_time", cacs_incident_header."at_scene_daylight", 
    cacs_incident_task."resource_or_class_id", 
    cacs_resource."description" as cacs_resource, 
    cacs_inc_type."description" as cacs_inc_type, 
    atscene_datetime = DateAdd(dd, 0, DateDiff(dd, 0, cacs_incident_header.at_scene_date)) + DateAdd(dd, 0 - DateDiff(dd, 0, cacs_incident_header.at_scene_time), cacs_incident_header.at_scene_time) 
FROM 
    { oj ((("universe_db"."dbo"."cacs_incident_header" cacs_incident_header INNER JOIN "universe_db"."dbo"."cacs_incident_header_inc_type_id" cacs_incident_header_inc_type_id ON 
     cacs_incident_header."id" = cacs_incident_header_inc_type_id."id") 
    INNER JOIN "universe_db"."dbo"."cacs_incident_task" cacs_incident_task ON 
     cacs_incident_header."id" = cacs_incident_task."incident_header_id") 
    INNER JOIN "universe_db"."dbo"."cacs_inc_type" cacs_inc_type ON 
     cacs_incident_header_inc_type_id."inc_type_id" = cacs_inc_type."id") 
    INNER JOIN "universe_db"."dbo"."cacs_resource" cacs_resource ON 
     cacs_incident_task."resource_or_class_id" = cacs_resource."id"} 
WHERE ' + @DateClause + @CallSignClause + ' AND ' + @OffenceTypeClause + 
' ORDER BY cacs_incident_task."resource_or_class_id" ASC' 

/* exec sp_executesql @SQLSelect */ 
print @SQLSelect