TWO Tables SQL 2005 Tables
Trend Table
Enter Exit Number
.01 .01 0
.02 .02 1
.03 .03 2
.04 .04 3
Orders Table
Ticker Enter Exit
EUR 0 1
GBP 2 3
Requirement: A single query to produce the Enter and Exit Values from Trend Table given only the Ticker Symbol from the Orders Table.
A Ticker Value will provide Enter and Exit Integers in the Orders Tabl开发者_开发问答e that correspond to the Number Column in The Trend Table which points to the actual Decimal Enter and Exit values that the query should output.
Enter and Exit Values need to be in separate columns. The following query produces output with values in 1 column only (see output)
SELECT T.Enter
FROM Trend AS T INNER JOIN Orders AS O ON O.Enter = T.Number
WHERE (O.Ticker = 'EUR')
UNION
SELECT D.Exit
FROM Trend AS D INNER JOIN Orders AS F ON F.Exit= D.Number
WHERE (F.Ticker = 'EUR')
OUTPUT:
Exit
0.01
0.02
Is this what you are after?
SELECT Orders.Ticker, T1.Enter, T2.Exit
FROM Orders
INNER JOIN Trend T1 ON Orders.Enter = T1.Number
INNER JOIN Trend T2 ON Orders.Exit = T2.Number
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