Mdb export to excel

Conversion methods

                    java -jar client-0.0.5.jar convert --output-format=xlsx database.mdb output-dir/
                

curl -F files[]=@database.mdb 'https://www.rebasedata.com/api/v1/convert?outputFormat=xlsx&errorResponse=zip' -o output.zip

How long does it take?

The conversion process takes between 15 seconds and multiple minutes. It depends on the size of the database.

Supported versions of Microsoft Access

• Microsoft Access 1.0 (Jet 1.0)
• Microsoft Access 1.1 (Jet 1.1)
• Microsoft Access 2.0 (Jet 2.0)
• Microsoft Access 2.0 Service Pack (Jet 2.5)
• Microsoft Access 95 (Jet 3.0)
• Microsoft Access 97 (Jet 3.5)
• Microsoft Access 2000/2002/2003 (Jet 4.0)
• More modern versions of Microsoft Access don’t create MDB files, but ACCDB files. See our ACCDB converter.

You can also use your favourite tool

• Read MDB using PHP
• Read MDB using Python
• Read MDB using Ubuntu

Why use RebaseData?

• Strong security.
• Convert online without installing Microsoft Access.
• Works with Windows, Mac and Linux.
• Use an API to convert your databases.
• Professional support.

Terms

• We don’t guarantee for the success or correctness of the conversion
• You are only allowed to convert your own database files
• By using RebaseData, you agree to our general terms

Импорт и Экспорт данных из mdb (Access) в Excel на VBA

Опубликовал Deys в ср, 16/10/2013 — 22:23

Версия для печати

Программные продукты MS Access и MS Excel относятся к одному пакету MS Office, но из-за лицензионных ограничений, не на все рабочие станции может быть установлен Access. Может возникнуть такая ситуация, что сотруднику, который работает только с Excel, потребуются некоторые данные, которые содержатся в базе Access. Как быть? Можно установить копию Access, но т.к. эта надобность может быть разовой или очень редкой, то приобретение лицензии экономически невыгодно. Можно попросить разработчика mdb создать отчет, который бы экспортировался в Excel. А можно, зная структуру таблиц БД Access, написать небольшой макрос (а можно и большой) который бы импортировал данные в книгу Excel и обрабатывал их особым образом. Есть еще один способ, это использовать инструменты Excel — «Импорт внешних данных», но о нем в других статьях. А пока рассмотрим пример на VBA.

Для импорта/экспорта будем использовать библиотеку MS DAO 3.6 Object Library, которая поставляется вместе с VBA. Включите ее в новом проекте. Для этого в редакторе VBA (Alt+F11) откройте Tools — References, найдите в списке «Microsoft DAO 3.6 Object Library» и поставьте галочку.

библиотека MS DAO 3.6 VBA

Например, у нас есть некая база данных комплектующих к ПК, прайс лист проще говоря. Таблица называется «tbl_прайс» и имеет следующую структуру:

ID — поле типа счетчик;

Вид — поле типа «Текст (String)» с длинной 50 символов. Содержит принадлежность к виду комплектующих (Процессор, Материнка, ОЗУ и т.д.);

Производитель — тип текст, длина 50;

Модель — содержит номер и краткие характеристики модели. Поле так же, текст, длина 255;

Количество — поле типа «Числовой», Размер — «Длинное целое». Содержит кол-во комплектующих на складе;

Цена — поле типа «Числовой», Размер — «Действительное». Указывает цену за единицу товара.

Можете создать и наполнить данными базу mdb, а можете взять используемую базу в примерах ниже здесь.

Итак, база есть, например, нам необходимо полностью прочитать таблицу БД («tbl_прайс») и вывести результат на лист Excel. Cоздаем новый модуль и добавляем в него процедуру следующего содержания:

Sub ReadMDB()

‘переменная хранящая результат запроса

Dim tbl As Recordset

‘строка запроса SQL

Dim SQLr As String

‘переменная хранящая ссылку на подключенную БД

Dim dbs As Database

‘подключаемся к mdb

Set dbs = DAO.OpenDatabase(«E:price.mdb»)

‘составляем строку SQL запроса

SQLr = «SELECT * FROM tbl_прайс»

‘отправляем запрос открытой БД

‘результат в виде таблицы сохранен в tbl

Set tbl = dbs.OpenRecordset(SQLr)

‘вставляем результат в лист начиная с ячейки A1

Cells(1, 1).CopyFromRecordset tbl

‘Закрываем временную таблицу

tbl.Close

‘Очищаем память. Если этого не сделать, то таблица

‘так и останется висеть в оперативке.

Set tbl = Nothing

‘Закрываем базу

dbs.Close

Set dbs = Nothing

End Sub

Логика работы этой и всех последующих процедур чтения(записи) данных в БД проста. Сначала мы открываем БД, затем отправляем SQL запрос, получаем результат запроса в виде таблицы, закрываем БД, освобождаем память.

В данном варианте мы использовали метод CopyFromRecordset ячейки листа т.е. вставили результат запроса в лист так как есть, но что делать если результат нужно еще обработать некоторым образом который невозможно описать в запросе!? Ниже код демонстрирует построчное чтение результата запроса в цикле Do While (как работает цикл Do While описано в этой статье):

Sub ReadMDB_построчно()

Dim tbl As Recordset

Dim SQLr As String

Dim dbs As Database

Dim i As Integer

Set dbs = DAO.OpenDatabase(«E:price.mdb»)

SQLr = «SELECT * FROM tbl_прайс»

Set tbl = dbs.OpenRecordset(SQLr)

i = 1

‘выполняем цикл пока не конец tbl

Do While Not tbl.EOF

‘присваиваем каждой ячейке значение из полей таблицы

Cells(i, 1) = tbl.Fields(«ID»)

Cells(i, 2) = tbl.Fields(«Вид»)

Cells(i, 3) = tbl.Fields(«Производитель»)

Cells(i, 4) = tbl.Fields(«Модель»)

Cells(i, 5) = tbl.Fields(«Количество»)

Cells(i, 6) = tbl.Fields(«Цена»)

‘и для примера получим сумму (цена*кол-во)

Cells(i, 7) = tbl.Fields(«Количество») * tbl.Fields(«Цена»)

i = i + 1

tbl.MoveNext ‘переход к следующей записи

Loop

tbl.Close

Set tbl = Nothing

dbs.Close

Set dbs = Nothing

End Sub

Обратите внимание, второй вариант выводит результат на лист заметно медленнее, чем первый! Поэтому рекомендую по возможности использовать первый вариант.

Метод OpenRecordset позволяет только считывать данные из таблиц БД с помощью запросов. Для того чтобы выполнить запросы на изменение, добавление или удаление записей в таблицах используется метод Execute. Смотрим пример, который позволяет добавить запись в таблицу (при соответствующем SQL запросе можно изменить, удалить записи):

Sub ReadMDB_добавить_запись()

Dim tbl As Recordset

Dim SQLr As String

Dim dbs As Database

Dim kol As Long

Set dbs = DAO.OpenDatabase(«E:price.mdb»)

Set tbl = dbs.OpenRecordset(«tbl_прайс»)

‘метод RecordCount позволяет получить кол-во записей

‘Kol хранит ID для новой записи

kol = tbl.RecordCount + 1

SQLr = «INSERT INTO tbl_прайс (ID,Вид,Производитель, Модель,Количество, Цена)» _

& «Values (» & kol & «,’ОЗУ’,’Hyndai’, ‘DDR3’, 123, 600)»

dbs.Execute SQLr

tbl.Close

Set tbl = Nothing

dbs.Close

Set dbs = Nothing

End Sub

В этих примерах показаны основные моменты работы с БД mdb, которые помогут организовать обмен данными между Excel и Access, но эти способы не являются единственно верными и правильными. На этом все. До встреч!

Прикрепленный файл: Чтение mdb на VBA.zip

Can you export data from Access to Excel? Certainly Yes! But the question arises as how to do it and when to do it. Hence, the present blog goes into the complete detail of exporting data items from MS Access to Excel worksheet. Through this blog an attempt has been made to give an apt answer to the queries such as how, why and when to export data items from MS Access database into MS Office Excel spreadsheet.

Transferring Data from Access Database to Excel Spreadsheet

To bring data from Access to Excel, users can execute any one of the following processes as mentioned below:

1. Copy data items from an MS Office Access database and paste it into an Excel worksheet.
2. Connect to Microsoft Office Access database from an MS Excel spreadsheet.
3. Export Access data contents into an MS Excel worksheet.
   

The above given three methods are indeed useful in bringing contents from Access into Excel sheet be it of XLS or XLSX type. However, the first option of copying and pasting data items is acknowledged as the best procedure when the data exchange is of temporary nature. The second way-out is useful only when connection has to be made to access the data of Access in Excel. The third suggested process is to export Access data items into Excel spreadsheet. Certainly, this is the best practice when the data exchange is periodical in nature.

General Scenarios to Export Contents into Excel from Access MDB File

Below are explained few, common cases that require exporting data from Access i.e. MDB file to Excel XLS or XLSX file. Conversion in XLSX Excel file is the alternate when the query is how to export data from Access to Excel 2010, 2007 or 2003.

• If manager of a user wants to view all reports in Excel file instead of Access database. Though the user does so by copying the data into Excel file, he/ she now wants to save time by exporting it completely in an automated way. This is because automatic export saves time.

• Suppose a user’s office utilizes both Access and Excel for work. They store data in the Access database whereas use Excel for the examination of the data items and for distribution of the outcome of the analysis made. Though the user and his team knows the way to export data into Excel file, but want to make the procedure more efficient and effective.

Note – There can be several more reasons for exportation.

Export of Access Data Items into Excel Worksheet

Now when the answer to the question: ‘Can you export data from Access to Excel’ is ‘Yes’; it gives rise to another query which is: ‘How can I convert an Access database into an Excel spreadsheet?’ This query is a common one amongst many people when they learn Access. This question actually means as how to export data into an Excel spreadsheet from MS Access database i.e. how to export contents from an MDB file into either XLS or XLSX format. The reason being, that Access database is saved in .mdb file format whereas Excel file is stored as either .xls or .xlsx file types, depending on the version of MS Office used. XLS is the default file format of Excel files created in Excel 2002 or below versions. Whereas Excel 2003, 2007 and above releases creates Excel files with .xlsx format.

Resolution – MS Access possess an in-built utility called Export Wizard by the usage of which users can export an Access database objects like queries, tables, forms and/or selected records in a view into an MS Excel spreadsheet. When data items are exported, at first Access forms a copy of the database object or selected data. And then it stores the created copy in the Excel file.

Acknowledgement of basics before exporting to Excel by ‘Export Wizard’

• Points to be noted are as follows:
• The export process can even be scheduled to run automatically at particular intervals, on the specified time.
• The details of the export operation can be saved in the system for future reference.

Note – The above two points can be classified in the list of advantages that the wizard offers.

• Fields that support multiple values are exported as a list of values and are separated by semicolons.
• With the use of this method the graphical elements do not get exported. For e.g. contents of OLE object fields, logos and attachments that are a part of the source data.
• The graphical elements require to be added manually into the spreadsheet. The addition of graphical elements must be done after the completion of export operation.
• The ‘null values’ in the output spreadsheet are replaced by the data that must have been in the next column. However, this happens at certain times and not always.
• Data belonging to days before January 1, 1900 cannot be exported. In such cases, the corresponding cells store null values in the resultant Excel file.
• Only the results of the calculations are exported into the output Excel file. The formulas used to calculate the values are not exported.
• Users need to add the expressions after completing the export operation manually.
• The value # might be seen in a column, which corresponds to a Yes/No field in a form. This usually happens when the exportation is started in Form view or from the Navigation Pane. To resolve this issue the form must be opened in Datasheet view before performing the export process.
• Macros or modules cannot be exported. When a report, form or the datasheet that contains subreports, subforms or subdatasheets is exported only the main report, form or datasheet gets exported.
• The exportation has to be repeated for each subreport, subform and subdatasheet that has to be exported.
• In a single export operation, only one database object can be exported. However, all the data of multiple spreadsheets can be combined into single Excel file after the export of entire individual objects gets completed.

Note – The points into the category of, list of disadvantages that the built-in Export Wizard offers.

For Exporting a Database Object

• Steps to be followe:

1. In the source database; if only a portion of a query, forms or table is to be exported then the object must be opened and thereby the desired records must be selected.
2. Next, on the tab External Data located in the ‘Export group’, the option Excel must be clicked upon.

   

1. The options present in the ‘Export-Excel Spreadsheet’ dialog box must be completed and then OK should be clicked for the completion of exportation process.

• The name for the Excel workbook must be entered.
• From the box of file format the appropriate file format must be selected.
• If either a table or a query is required to be exported, and together with that it is desired that the formatted data be exported, then the option ‘export data with formatting and layout’ should be chosen.
• To view the Excel workbook after completion of the export procedure, the check box ‘Open the destination file after the export operation is complete’ should be checked.
• If the source object is open and if the user chose one or more records in the view before the start of the export process, users can select ‘Export only the selected records’. Nevertheless, to export all the displayed records in the view, the particular check box must be left unchecked.

Note– The check box ‘Export only the selected records’ remains unavailable if records are not selected.

1. Then, Access prompts up a dialog box in which users can create a specification that utilizes the some particulars of the export procedure. The option ‘Yes’ must be clicked to store the detailed report of the export process for use in future.

Note– The advantage of saving the particulars is that it assist users to reiterate the same process sometime in future, without having to follow the wizard every time exportation has to be performed.

• In the ‘Save as’ box, a name for the export process must be specified as shown in the image below. Then a description can be added in the ‘Description box’ if wanted. There also exists an alternative to create an Outlook task. This option is provided to remind users to complete the future export operations.

  

• To run a saved import, users must click upon the Saved Exports button located in the ‘External Data’ tab. This is displayed in the figure below.

  

• Finally, in Manage Data Tasks the apt export action must be selected and then the tab Run should be clicked upon as displayed in the figure below.

  

One Tool to Fight Back the Misses of ‘Export Wizard’

If the query is: how to export data from Access to Excel 2010, 2007 or any lower versions then the utility that can best answer the question is Access to Excel Converter software. This is because it has the capability to export MDB file into both XLS and XLSX without data loss. It has the ability to deal with all the misses of the manual export operation explained above i.e. by means of Export Wizard. In addition, it is featured with the following characteristics:

• Converts Access tables without loss of data.
• Can retrieve even damaged Access database.
• Can export Excel per database and also per table.
• Does not impose any restriction on size of file.

However, the requirement is that installation of MS Access is a must on the PC, on which the external utility is run.