Linking Problem

[Guest]

I have a database with 12 tables. I want to do a simple query where I would
get the count of three different tables.

Count(TableA)
Count(TableB)
Count(TableC)

All three tables have the same primary key. The query fuctions when I only
deal with 2 tables. But when I deal with more than that I get this error:

The SQL statement could not be executed becuase it contains ambiguous outer
joins. To force one of the joins to performed first, create a separate query
that performs the first join and then include that query in your SQL
statement.

Any idea what I'm doing wrong. Thanks.

 

[Guest]

Can not know based on the information provided.

Why did you not post the SQL statement as you knew from the error message it
had a problem?

 

[Jamie Collins]

I have a database with 12 tables. I want to do a simple query where I would
get the count of three different tables.

Count(TableA)
Count(TableB)
Count(TableC)

All three tables have the same primary key.

The hard way (a.k.a. roll your own):

SELECT COUNT(ID) AS CARDINALITY, 'TableA' AS TABLE_NAME
FROM TableA
UNION ALL
SELECT COUNT(ID), 'TableB'
FROM TableB
UNION ALL
SELECT COUNT(ID), 'TableC'
FROM TableC;

An easier way: use the SCHEMA_CATALOG (a.k.a don't reinvent the
wheel):

Set rs = CurrentProject.Connection.OpenSchema(adSchemaStatistics)
rs.Filter = "TABLE_NAME = 'TableA' OR TABLE_NAME = 'TableB' OR
TABLE_NAME = 'TableC'"
? rs.GetString
TableA 1
TableB 3
TableC 0

Jamie.

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