This is not the WHERE x IN(1,2,3) operator, but the Access-specific FROM x IN 'C:\OtherDatabase.mdb' IN clause.
I have a query which looks up a large number of tables from a separate database file (which frequently changes name and/or path with new versions).
SELECT id FROM someTable IN 'C:\OtherDatabase.accdb'
works just great. What I'd like to do is offer some flexibility to the user w.r.t. the path and file name of the other database. Consequently, I have another table with a single row which contains the full path. I've tried the following:
SELECT id FROM someTable IN DLookup("Path", "tblExternalData")
which yields Syntax error in FROM clause, then highlights the opening paren in the SQL editor.
I'd rather not individual link a dozen different tables into this database just to query them (examples provided here obviously simplified) The IN clause seems perfect for my needs, if I can change it when needed, instead of hard-coding the path into the query!
The only method I've found so far is in VBA:
strFileName = DLookup("Path", "tblExternalData")
strSQL = "SELECT id INTO tmpTable FROM someTable IN '" & strFileName & "';"
DoCmd.RunSQL strSQL
I don't find this a fantastic solution--I don't like merging strings to get executable SQL--but it works for now.
Related
I have quite a complex requirement where I need to populate a SELECT query with parameters coming from a list box in Access. All seems to be working fine except for the SELECT part of the query, In short, I need the VBA code to populate the following in my Access query:
SELECT TRIM(ACCOUNT_NO)&","&UNITS FROM GRV_OFFICE
I have the following in my VBA code:
strSQL = "SELECT TRIM(ACCOUNT_NO)" & "," & "UNITS FROM GRV_OFFICE"
But for some reason it keeps populating it as follows in Access:
SELECT Trim(ACCOUNT_NO) AS Expr1, GRV_OFFICE.UNITS
The reason I am using trim is because this is eventually exported from the database to populate an import into another application. Without the trim there are unnecessary spaces which are messing with the subsequent import process.
So the ultimate result of this query should be the ACCOUNT_NO with a comma and then the number of units in one field.
I find this really frustrating as this should be the easy part of the project.
Any assistance will be appreciated.
You need to use concatenation to get two column fields together.
Below code may work:
strSQL = "SELECT TRIM(ACCOUNT_NO) + ' ' + UNITS as newColumn FROM [GRV_OFFICE];"
Reference : https://www.mssqltips.com/sqlservertip/2985/concatenate-sql-server-columns-into-a-string-with-concat/
I have an Access 2007 database that will be housing tables which refer to the bill of materials for multiple products. On the main form I want a user to be able to select one of the products - OK, easy. Now, I want two queries to run once they press a button after choosing their product from a dropdown. The first query is a simple delete query to delete all information on a table. The second query is where I'm having my issue with my SQL syntax. I want the information from a static table to be appended to the table where the delete query just removed everything from.
Now, each table that houses the bill of material for each product is labeled with the product's name. So I want the dropdown (combo0) to be the reference point for the table name in the FROM clause within the SQL string. Code is as follows:
INSERT INTO tblTempSassyInfo (Concat, TableName, AddressName, PartNumber, [L/R], FeederSize, QtyPerBoard, SASSYname, RawBoard)
SELECT TableName & AddressName & PartNumber, TableName, AddressName, PartNumber, [L/R], FeederSize, QtyPerBoard, SassyName, RawBoard
FROM [FORMS]![DASHBOARD]![Combo0];
So you can see where I'm trying to reference the product name in the dropdown on the form as the table name. Please let me know if this is possible.
"... I'm trying to reference the product name in the dropdown on the form as the table name. Please let me know if this is possible."
It is not possible with Access SQL.
The db engine can only accept the actual table name --- it isn't equipped to reference a form control to find the table name nor to accept any other type of parameter to obtain the table name.
You could change the query to include your combo's value as the table name and then rewrite the SQL from the combo's after update event.
"SELECT * FROM [" & [FORMS]![DASHBOARD]![Combo0] & "]"
A similar approach could keep Access happy. But it may not be the best fit for your application.
So, the user essentially wants 2 queries to run. A DELETE * FROM Table query, and an Append query. The user wants to know what table to utilize for the Append query by using the Combobox (may just be my assumption/interpretation). That being said, why not use something along the lines of:
If IsNull(Me.[Combo0].Value) Then
MsgBox "Please select something."
Me.[Combo0].SetFocus
Cancel = True
Else
Select Case Me.Form!Combo0
Case 1
DoCmd.OpenQuery "DeleteMaterialsTableData" 'Query to delete appropriate table data dependent on Combobox selection'
DoCmd.OpenQuery "QueryNameMaterial1" 'Append records to appropriate table dependent on Combo0 selection'
Case 2
DoCmd.OpenQuery "DeleteMaterialsTableData" 'Query to delete appropriate table data dependent on Combobox selection'
DoCmd.OpenQuery "QueryNameMaterial2" 'Append records to appropriate table dependent on Combo0 selection'
This is just trying to use the users' combobox values to determine which table to run the queries against, instead of the user trying to use the Combobox's value as a table name.
You're pressing a button to do this. This implies that some VBA code is running behind the scene (the Click event of the button). In that case, the answer is a resounding Yes.
Dim strSQL as String
Dim strSQL2 as String
strSQL = "DELETE * FROM tblTempSassyInfo;"
DoCmd.RunSQL (strSQL)
strSQL2 = "INSERT INTO tblTempSassyInfo (Concat, TableName, AddressName, PartNumber, [L/R], FeederSize, QtyPerBoard, SASSYname, RawBoard)
SELECT TableName & AddressName & PartNumber, TableName, AddressName, PartNumber, [L/R], FeederSize, QtyPerBoard, SassyName, RawBoard
FROM " & [FORMS]![DASHBOARD]![Combo0].SelectedValue & ";"
DoCmd.RunSQL (strSQL2)
You may need to tweak that a bit, but it should get you pretty close.
You MAY need to use [FORMS]![DASHBOARD]![Combo0].Columns(0) or Columns(1) instead, I can't remember...
As was stated; Access (and just about any brand database) can definitely do append and delete queries.
The problem is the design. Specifically:
FROM [FORMS]![DASHBOARD]![Combo0];
From clause must be a record set (table) not a call to a control on a form.
My suggestion is to first establish a Select query that has the correct data that you want to append. Save that with a name. You need to be able to do this first.
Once that is done - then create an Append query that uses that saved Select query as its starting record set.
You then just need to trigger the Append query (the Select query will automatically run) using vba behind your button click event:
Docmd.OpenQuery "Append Query Name"
This is 100% possible in MS Access 2010 onward based on my experience. I've not used 2007, but MS says it is possible (see link below). I'm using parametrized queries in a few databases.
PARAMETERS [forms].[dash].[dt_val] DateTime;
SELECT a.F3 AS AdEnt, [forms].[dash].[dt_val] AS Expr1...
The important thing I've found is using a form the user will be interacting with and setting the Date as "DateTime" within the parameter. Here is a video from Microsoft that shows how to and says that it applies to 2007.
Use Parameters in MS Access Queries
Additionally, if you want to do a delete or append, save it as a query then place a button on the form that executes the docmd.runquery for the name of that saved delete/append query.
How can I perform a Query to my Database (using tOracleInput), like a Select, and use Strings that are already defined as parameters in other components, for example in a 'tFlowToIterate' ?
For example: "SELECT * from TABLE_X where FIELD_X= ? ;"
My '?' is the variable that comes from my tFlowToIterate component (foo). I already tried with (String)globalMap.get("foo"), and other similar forms...
Thanks
[Talend Open Studio for Data Integration v5.3.1;
DB: Oracle]
You answered by yourself. tOracleInput component accepts the query as parameter. This is a very boring java String, no more, no less. This means that if you want to use a globalMap element inside a query, you just need to do a java String concatenation. Something like that:
"SELECT * from TABLE_X where FIELD_X='" + (String)globalMap.get("foo") + "'"
but this won't work (look carefully at the quotes):
"SELECT * from TABLE_X where FIELD_X='(String)globalMap.get("foo")'"
Keep in mind that if you write a query using string concatenation and external vars, the query editor will probably going to mess all the quotes, generating a broken query.
As a general advice, I never suggest to use the "*" operator inside a database input component like tOracleInput. Talend has a fixed-scheme structure that is generated at compile time. This means that if one day you'll add a column to TABLE_X, your ETL will going to fail.
A more robust solution is the following:
Write down your query with the * operator
Click "Guess Schema" to retrieve the table schema and put in your component metadata
Now click "Guess Query" to explicitely rewrite your SELECT
Fix the query (ie. WHERE conditions,...) if needed
You just need to concatenate it with your variable.
So in your case it would look like:
"SELECT *
FROM TABLE_X
WHERE FIELD_X = '" + (String)globalMap.get("foo") + "'"
Background info:
I got ms access 2010 database with >10 (and growing) linked tables, sources: csv & xls from scattered tools that needs to be combined and queried. The sources are 'dirty' and I use insert queries with additional code to clean them and store the records in a local table with indexing for better performance later. The local tables are emptied first with a delete query. The insert queries are logged with a data macro After Insert: LogEvent on the local table in USysApplicationLog. Data macro produces loads of records in USysApplicationLog, while 1 per table per insert would be sufficient for my cause. Open issue, but less important at this time.
The local tables have the same name as the linked table with the postfix "-local".
Examples: csvMachines / cvsMachines-local, csvCustomers / csvCustomers-local, etc.
At the moment I'm manually checking everything, doing all the queries, etc. But looking for a way to automate this more.
Before using the database with local tables I want to check if:
the local tables are up to date
got this kinda covered with querying the USysApplicationLog and UDF function to check modification date of sources
the local tables are filled
reason for my question here
Looking for a smart way (sql, vba or udf) to combine following working query
SELECT MSysObjects.NAME AS LinkedTableName
,[LinkedTableName] & "-local" AS LocalTableName
FROM MSysObjects
WHERE (((MSysObjects.DATABASE) IS NOT NULL));
with a simple SELECT count(*) per local table name.
Tried following but Access can't find LocalTableName as table.
SELECT MSysObjects.NAME AS LinkedTableName
,[LinkedTableName] & "-local" AS LocalTableName
,(
SELECT count(*)
FROM [LocalTableName]
) AS LocalTableRecordCount
FROM MSysObjects
WHERE (((MSysObjects.DATABASE) IS NOT NULL));
Looked at old similar questions as Create table - dynamic name of table and MS Access query with dynamic from statements, but didnt see how to implement their solutions in my situation.
Access will not let you provide a name for the FROM data source at runtime. It just does not support that capability.
Since you have a VBA tag on this question, perhaps you would consider a procedure which loops through your table names and retrieves the record count for each.
For each table name ...
strSelect = "SELECT Count(*) FROM " & LocalTableName
MsgBox CurrentDb.OpenRecordset(strSelect)(0)
Or look at the TableDef.RecordCount property ...
MsgBox CurrentDb.TableDefs(LocalTableName).RecordCount
Looking for a solution for another issue, I found an alternative anwser for this question in the Access Help: expression.DCount(Expr, Domain, Criteria)
Working query for my situation:
SELECT MSysObjects.NAME AS LinkedTableName
,[LinkedTableName] & "-local" AS LocalTableName
,DCount("*", [LinkedTableName] & "-local") AS LocalTableRecordCount
FROM MSysObjects
WHERE (((MSysObjects.DATABASE) IS NOT NULL));
Ok this is vexing me. I have a query I created with an in statement in the from clause. What I am looking to do is have a global variable populate that from statement. Example
Select *
Form query1 in <Global Variable filename>
What is going on is I link to a file that has hundreds of linked table and queries in it. My database only has a few select queries and link table to different database. I did not want to re-build all the queries and linked table is my database. The issue is the file with all the links changes name once a month. I just want to read a text file with the current name of the database in it so I do not have to keep changing my queries every time the database name changes. Also this has to a query since I have other queries using the externally linked query.
I have one suggestion, but its pretty kludgy.
Rewrite the query on the fly with VBA call
Private Sub update_qtest()
Dim db As Database
Dim qd As QueryDef
Set db = CurrentDb
Set qd = db.QueryDefs("qtest")
qd.SQL = "SELECT * from query1 in " & g_file_name
End Sub
As I said, it's kludgy, but I don't think there's a way to pass the from clause as a parameter.
Another way to do this would be to just use the same file name each month so you wouldn't have to change anything in your Access app at all. You could easily code copying the file to the standard name over top of the previous copy (you'd have to delete it before copying, of course), which would retain the history.