RE: SQL Error

According to Microsoft Themselves:

SQL: Error correlating fields Visual Studio .NET 2003

An outer reference can be used only in syntax similar to the following:

X = Y

Syntax such as X = Y + 1 or X = 5 will produce this error.

Dave

-----Original Message----- From: ProFox [mailto:profox-bounces@leafe.com] On Behalf Of Koen Piller Sent: 08 August 2017 16:40 To: ProFox Email List profox@leafe.com Subject: Re: SQL Error

Hi,

Please note:

select .T.; FROM cwkt; where; cwkt.clcode=ctwc.clcode And cwkt.wccode=ctwc.wccode And; (cwkt.trndate BETWEEN ctwc.validfr AND ctwc.validto); order By funccode, trndate, clcode, wccode, wonbr Into Cursor temp

gives a result

and

select .T. ; From ctwc; where; cwkt.clcode=ctwc.clcode And cwkt.wccode=ctwc.wccode And; cwkt.trndate<ctwc.validto AND cwkt.trndate>validfr ; order By funccode, trndate, clcode, wccode, wonbr Into Cursor temp

errors: Column funccode is not found.

queries are identical however query 1 uses between etc and query 2 uses < etc

and query3 with the VFP between function:

select .T.; FROM cwkt; where; cwkt.clcode=ctwc.clcode And cwkt.wccode=ctwc.wccode And; BETWEEN(cwkt.trndate, ctwc.validfr, ctwc.validto); order By funccode, trndate, clcode, wccode, wonbr Into Cursor temp

also gives a result

for you to test yourselve:

CREATE CURSOR cwkt ( funccode C(2), trndate d, clcode c(10), wccode c(10), wonbr c(1)) INSERT INTO cwkt( funccode,trndate,clcode,wccode,wonbr) VALUES ("AB", {^2017.01.01}, "DD", "BB", "1") INSERT INTO cwkt( funccode,trndate,clcode,wccode,wonbr) VALUES ("TW", {^2017.08.01}, "DA", "BA", "2") INSERT INTO cwkt( funccode,trndate,clcode,wccode,wonbr) VALUES ("TW", {^2017.03.01}, "DB", "BC", "3") INSERT INTO cwkt( funccode,trndate,clcode,wccode,wonbr) VALUES ("TW", {^2017.04.01}, "DC", "BD", "4")

CREATE CURSOR ctwc ( clcode c(10), wccode c(10),validfr d, validto d) INSERT INTO CTWC( clcode, wccode, validfr, validto) VALUES ("AC", "BB", {^2017.01.01},{^2017.01.01}) INSERT INTO CTWC( clcode, wccode, validfr, validto) VALUES ("DA", "BA", {^2017.01.01},{^2017.09.01}) INSERT INTO CTWC( clcode, wccode, validfr, validto) VALUES ("DB", "BC", {^2017.01.01},{^2017.02.01}) INSERT INTO CTWC( clcode, wccode, validfr, validto) VALUES ("DC", "BD", {^2017.01.01},{^2017.05.01})

and the full syntax

select *; from cwkt; where; funccode="TW" And trndate>={^2017.07.01} And; exists; (; select .T. From ctwc; where; cwkt.clcode=ctwc.clcode And cwkt.wccode=ctwc.wccode And; BETWEEN(cwkt.trndate, ctwc.validfr, ctwc.validto); ); order By funccode, trndate, clcode, wccode, wonbr Into Cursor temp

errors: SQL - error correlating fields.

the syntax:

select *; from cwkt; where; funccode="TW" And trndate>={^2017.07.01} And; exists; (; select .T. ; From ctwc; where; cwkt.clcode=ctwc.clcode And cwkt.wccode=ctwc.wccode And; cwkt.trndate<ctwc.validto AND cwkt.trndate>validfr; ); order By funccode, trndate, clcode, wccode, wonbr Into Cursor temp gives a result

Koen

2017-08-08 15:20 GMT+02:00 Ted Roche tedroche@gmail.com:

I think this is referring to something different: a query in the FROM clause is different from a query in the WHERE clause. In the FROM clause, you're using the SQL to create an artificial data source, a "Derived Table" in VFP terms. In the WHERE clause, you're filtering the data in the SELECT portion against a set of tests, which could include running a query and testing it against the source records for matching.

[excessive quoting removed by server]