We would like to transfer data from a MS Access database to SQLite. Unfortunately, SQlite does not support the whole range of functions provided by Access.
ALTER TABLE Move DROP CONSTRAINT MoveEnum
ALTER TABLE IG_MDB_VERSION DROP COLUMN POOLART
Can anyone give us a replacement in SQLite which realizes the above two SQL statements. Thanks in advance!
If you are now able to link to the sqlite database from Access, and you can edit data with the linked tables from Access?
Then to execute your above sqlLite commands from Access?
Simply create + use what are called pass-though queries from Access. This will allow you to send/execute any valid sqlite commands from Access - including your example(s) in your question.
However before you attempt to use pass-though queries, you want to ensure that you can create linked tables from Access, and those linked tables allow you to edit data (say by clicking on a linked table in Access to sqlite, and that editing etc. works just fine from Access.
Related
I am very new to SQL, MS Access & PostgreSQL. So this might be a very silly question but somehow I can't figure it out. I'm trying to run SQL queries in access and my data is in a PostgreSQL database table which was linked to access by my colleague earlier. When I make this simple query why do I get an error that the table doesn't exist? Is the syntax different for linked database tables? Or is the link not yet established?
You have created a Pass-Through query. This query is executed on the server, not in Access, so you need to use the original table names from the PostgreSQL database.
So it's not FROM public_tb_change but FROM tb_change.
Or maybe FROM public.tb_change, if public isn't the default schema.
I advise to rename your linked tables to the original name (remove public_), that makes things much less confusing. The schema name is automatically added by Access when linking the tables.
I have a database called AQOA_Core with huge amount of data.
I have a newly created database called AQOA_Core1 which is basically empty. I want to write a query to duplicate AQOA_Core to AQOA_Core1 without the data. I guess to be precise I want to create a skeleton of the primary database into the secondary database.
PS: I use Toad for my database operations.
You can use SQL Server Script Wizard for scripting database objects. You can exclude data, and select the database object types you want to include in your script
Please check the SQL Server guide I referenced above,
I hope it helps you
I need to use a pass through query using an ODBC connection, however I need to further refine the SQL using another tables within the same Access database.
How do I reference the Access table? Access keeps thinking I am looking for a table via the ODBC connection rather than the database itself.
First, you create a Linked Table in access, using the ODBC connection. Then, you just write a query against the Access database using whatever name you give your Linked Table, and the names of the access tables.
Be warned: if the linked table contains a large number of rows, Linked Tables can be very inefficient.
I am new to access. I am using a tool/access database someone built, and it has an ODBC connection to an Oracle SQL database in it.
There are different queries on the side panel, and some of them are delete queries.
If I run these delete queries will they just modify data in my local access database without modifying the data in the Oracle Database?
Yes these will change something in the database whether its linked with another access database table or oracle table and within the database. To review the query you can open the queries in design view and run a normal select query so you can see what the queries are deleting. You can have a normal table image and or globe with a arrow in front pointing towards the table then its linked. A lot of times when I am testing I just run select queries and then I make a copy of what I will be deleting just in case anything goes wrong.
When I right click on the database I want to export data from, I only get to select a single table or view, rather than being able to export all of the data. Is there a way to export all of the data?
If this is not possible, could you advise on how I could do the following:
I have two databases, with the same table names, but one has more data than the other
They both have different database names (Table names are identical)
They are both on different servers
I need to get all of the additional data from the larger database, into the smaller database.
Both are MS SQL databases
Being that both are MS SQL Servers, on different hosts... why bother with CSV when you can setup a Linked Server instance so you can access one instance from the other via a SQL statement?
Make sure you have a valid user on the instance you want to retrieve data from - it must have access to the table(s)
Create the Linked Server instance
Reference the name in queries using four name syntax:
INSERT INTO db1.dbo.SmallerTable
SELECT *
FROM linked_server.db.dbo.LargerTable lt
WHERE NOT EXISTS(SELECT NULL
FROM db1.dbo.SmallerTable st
WHERE st.col = lt.col)
Replace WHERE st.col = lt.col with whatever criteria you consider to be duplicate values between the two tables.
There is also a very good tool by Redgate software that syncs data between two databases.
I've also used SQL scripter before to generate a SQL file with insert statements that you can run on the other database to insert the data.
If you right-click on the database, under the Tasks menu, you can use the Generate Scripts option to produce SQL scripts for all the tables and data. See this blog post for details. If you want to sync the second database with the first, then you're better off using something like Redgate as suggested in mpenrow's answer.