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doc/man/update.l

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+.\" This is -*-nroff-*-
+.\" XXX standard disclaimer belongs here....
+.\" $Header: /cvsroot/pgsql/doc/man/Attic/update.l,v 1.1.1.1 1996/08/18 22:14:28 scrappy Exp $
+.TH UPDATE SQL 11/05/95 Postgres95 Postgres95
+.SH NAME
+update \(em replace values of attributes in a class
+.SH SYNOPSIS
+.nf
+\fBupdate\fR classname \fBset\fR attname-1 = expression-1,
+	{attname-i = expression-i}
+	[\fBwhere\fR qual]
+.fi
+.SH DESCRIPTION
+.BR Update
+changes the values of the attributes specified in
+.IR target_list 
+for all instances which satisfy the qualification,
+.IR qual .
+Only the attributes to be modified need appear in
+.IR target_list .
+.PP
+Array references use the same syntax found in 
+.IR select(l).
+That is, either single array elements, a range of array elements or
+the entire array may be replaced with a single query.
+.PP
+You must have write access to the class in order to modify it, as well
+as read access to any class whose values are mentioned in the target list
+or qualification.
+.SH EXAMPLES
+.nf
+--
+--Give all employees who work for Smith a 10% raise
+--
+update emp 
+   set sal = 1.1 * sal
+   where mgr = 'Smith'
+.fi
+.SH "SEE ALSO"
+create table(l),
+select(l).