Added @ExpireDate and @RetainDays parameters

DatabaseBackup.sql

@@ -77,6 +77,8 @@ ALTER PROCEDURE [dbo].[DatabaseBackup]
 @StringDelimiter nvarchar(max) = ',',
 @DatabaseOrder nvarchar(max) = NULL,
 @DatabasesInParallel nvarchar(max) = 'N',
+@ExpireDate datetime = NULL,
+@RetainDays int = NULL,
 @LogToTable nvarchar(max) = 'N',
 @Execute nvarchar(max) = 'Y'
 
@@ -349,6 +351,8 @@ BEGIN
   SET @Parameters += ', @StringDelimiter = ' + ISNULL('''' + REPLACE(@StringDelimiter,'''','''''') + '''','NULL')
   SET @Parameters += ', @DatabaseOrder = ' + ISNULL('''' + REPLACE(@DatabaseOrder,'''','''''') + '''','NULL')
   SET @Parameters += ', @DatabasesInParallel = ' + ISNULL('''' + REPLACE(@DatabasesInParallel,'''','''''') + '''','NULL')
+  SET @Parameters += ', @ExpireDate = ' + ISNULL('''' + CONVERT(nvarchar, @ExpireDate, 21) + '''','NULL')
+  SET @Parameters += ', @RetainDays = ' + ISNULL(CAST(@RetainDays AS nvarchar),'NULL')
   SET @Parameters += ', @LogToTable = ' + ISNULL('''' + REPLACE(@LogToTable,'''','''''') + '''','NULL')
   SET @Parameters += ', @Execute = ' + ISNULL('''' + REPLACE(@Execute,'''','''''') + '''','NULL')
 
@@ -2337,6 +2341,28 @@ BEGIN
     SELECT 'The value for the parameter @DatabasesInParallel is not supported.', 16, 2
   END
 
+  ----------------------------------------------------------------------------------------------------
+
+  IF @ExpireDate IS NOT NULL AND (@BackupSoftware IS NOT NULL OR @BackupSoftware <> 'LITESPEED')
+  BEGIN
+    INSERT INTO @Errors ([Message], Severity, [State])
+    SELECT 'The value for the parameter @ExpireDate is not supported.', 16, 1
+  END
+
+  ----------------------------------------------------------------------------------------------------
+
+  IF @RetainDays < 0
+  BEGIN
+    INSERT INTO @Errors ([Message], Severity, [State])
+    SELECT 'The value for the parameter @RetainDays is not supported.', 16, 1
+  END
+
+  IF @RetainDays IS NOT NULL AND (@BackupSoftware IS NOT NULL OR @BackupSoftware <> 'LITESPEED')
+  BEGIN
+    INSERT INTO @Errors ([Message], Severity, [State])
+    SELECT 'The value for the parameter @RetainDays is not supported.', 16, 1
+  END
+
   ----------------------------------------------------------------------------------------------------
 
   IF @LogToTable NOT IN('Y','N') OR @LogToTable IS NULL
@@ -3715,6 +3741,8 @@ BEGIN
           IF @Encrypt = 'Y' AND @ServerAsymmetricKey IS NOT NULL SET @CurrentCommand += 'SERVER ASYMMETRIC KEY = ' + QUOTENAME(@ServerAsymmetricKey)
           IF @Encrypt = 'Y' SET @CurrentCommand += ')'
           IF @URL IS NOT NULL AND @Credential IS NOT NULL SET @CurrentCommand += ', CREDENTIAL = N''' + REPLACE(@Credential,'''','''''') + ''''
+          IF @ExpireDate IS NOT NULL SET @CurrentCommand += ', EXPIREDATE = ''' + CONVERT(nvarchar, @ExpireDate, 21) + ''''
+          IF @RetainDays IS NOT NULL SET @CurrentCommand += ', RETAINDAYS = ' + CAST(@RetainDays AS nvarchar)
         END
 
         IF @BackupSoftware = 'LITESPEED'
@@ -3763,6 +3791,8 @@ BEGIN
           IF @Throttle IS NOT NULL SET @CurrentCommand += ', @throttle = ' + CAST(@Throttle AS nvarchar)
           IF @Description IS NOT NULL SET @CurrentCommand += ', @desc = N''' + REPLACE(@Description,'''','''''') + ''''
           IF @ObjectLevelRecoveryMap = 'Y' SET @CurrentCommand += ', @olrmap = 1'
+          IF @ExpireDate IS NOT NULL SET @CurrentCommand += ', @expiration = ''' + CONVERT(nvarchar, @ExpireDate, 21) + ''''
+          IF @RetainDays IS NOT NULL SET @CurrentCommand += ', @retaindays = ' + CAST(@RetainDays AS nvarchar)
 
           IF @EncryptionAlgorithm IS NOT NULL SET @CurrentCommand += ', @cryptlevel = ' + CASE
           WHEN @EncryptionAlgorithm = 'RC2_40' THEN '0'