Please make sure you are editing the right file (/administrator/components/com_virtuemart/html/shop.product_details.php)

If you still can’t find the code, contact me privately.

select @row+numbers.id*86400 , orders.quantity  FROM (select @row:=(select UNIX_TIMESTAMP(min(order_date)) FROM orders), @end:=(select UNIX_TIMESTAMP(max
(order_date)) FROM orders)) r , numbers LEFT JOIN orders ON UNIX_TIMESTAMP(order_date)=@row+numbers.id*86400 WHERE @row+numbers.id*86400 < @end;

@row is initialized as the min date.The 86400 are the seconds in a day.The entries in the “numbers” table (0..1..2….n) makes the expression (@row+numbers.id*86400) jump one day at a time, which is then left joined to dates in the orders table.
In the case you’d need hours, or minutes, instead of days, changing the constant should be enough.
I’ve just crafted this query, so i dont know if it’s bug-free! 

— Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
— Purpose: To search all columns of all tables for a given search string
— Written by: Narayana Vyas Kondreddi
— Site: http://vyaskn.tripod.com
— Tested on: SQL Server 7.0 and SQL Server 2000
— Date modified: 28th July 2002 22:50 GMT

— ****************************************
— Also for numeric field
— Modified by Ricardo Alfaro Vega

CREATE TABLE #Results (ColumnName nvarchar(370), ColumnValue nvarchar(3630))

SET NOCOUNT ON

DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ”
SET @SearchStr2 = QUOTENAME(‘%’ + @SearchStr + ‘%’,””)

WHILE @TableName IS NOT NULL
BEGIN
SET @ColumnName = ”
SET @TableName =
(
SELECT MIN(QUOTENAME(TABLE_SCHEMA) + ‘.’ + QUOTENAME(TABLE_NAME))
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = ‘BASE TABLE’
AND QUOTENAME(TABLE_SCHEMA) + ‘.’ + QUOTENAME(TABLE_NAME) > @TableName
AND OBJECTPROPERTY(
OBJECT_ID(
QUOTENAME(TABLE_SCHEMA) + ‘.’ + QUOTENAME(TABLE_NAME)
), ‘IsMSShipped’
) = 0
)

WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
BEGIN
SET @ColumnName =
(
SELECT MIN(QUOTENAME(COLUMN_NAME))
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND DATA_TYPE IN (‘char’, ‘varchar’, ‘nchar’, ‘nvarchar’)
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)

IF @ColumnName IS NOT NULL
BEGIN
INSERT INTO #Results
EXEC
(
‘SELECT ”’ + @TableName + ‘.’ + @ColumnName + ”’, LEFT(‘ + @ColumnName + ‘, 3630)
FROM ‘ + @TableName + ‘ (NOLOCK) ‘ +
‘ WHERE ‘ + @ColumnName + ‘ LIKE ‘ + @SearchStr2
)
IF ISNUMERIC(@SearchStr) = 1
BEGIN
SET @ColumnName =
(
SELECT MIN(QUOTENAME(COLUMN_NAME))
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND DATA_TYPE IN (‘int’,'bigint’,’smallint’,'tinyint’,'decimal’,'float’,'real’)
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)

IF @ColumnName IS NOT NULL
BEGIN

INSERT INTO #Results
EXEC
(
‘SELECT ”’ + @TableName + ‘.’ + @ColumnName + ”’, LEFT(‘ + @ColumnName + ‘, 3630)
FROM ‘ + @TableName + ‘ (NOLOCK) ‘ +
‘ WHERE ‘ + @ColumnName + ‘ LIKE ‘ + @SearchStr2
)
END                   
END
END
END
END

SELECT ColumnName, ColumnValue FROM #Results
END

GO