RelationalDataProviderGetCastExpression Method

Gets a data conversion expression, used in general for avoiding overflow exceptions when using aggregates.

Namespace: Dundas.BI.Data.DataProviders.Relational
Assembly: Dundas.BI.Core (in Dundas.BI.Core.dll) Version: 2.0.0.0 (26.2.0.1000)

Syntax

public abstract string? GetCastExpression(
	DatabaseType targetType
)

Public MustOverride Function GetCastExpression ( 
	targetType As DatabaseType
) As String

public:
virtual String^ GetCastExpression(
	DatabaseType targetType
) abstract

abstract GetCastExpression : 
        targetType : DatabaseType -> string

String
The corresponding convert expression.

Remarks

Used for query generation to avoid an overflow when using aggregate functions.

For example, for SQL Server should return CONVERT(BIGINT, {0}) if target type is Int64.

If the data provider does not support casting or conversion, the function returns .