4D v14
COALESCE
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4D v14
COALESCE
COALESCE
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COALESCE (arithmetic_expression, ..., arithmetic_expression) |
||
The COALESCE function returns the first non-null expression from the list of arithmetic_expression type arguments passed. It will return NULL if all the expressions passed are NULL.
This example returns all the invoice numbers from 2007 where the VAT is greater than 0:
SELECT INVOICE_NO
FROM INVOICES
WHERE EXTRACT(YEAR(INVOICE_DATE)) = 2007
HAVING (COALESCE(INVOICE_VAT;0) > 0)PROPERTIES
Product: 4D
Theme: Functions
ARTICLE USAGE
4D SQL Reference ( 4D v11 SQL Release 4 )
4D SQL Reference ( 4D v14)
4D SQL Reference ( 4D v12.1)
4D SQL Reference ( 4D v13.4)
4D SQL Reference ( 4D v14 R2)
4D SQL Reference ( 4D v14 R3)
4D SQL Reference ( 4D v14 R4)
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