diff options
| -rw-r--r-- | doc/src/sgml/syntax.sgml | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml index 0537f531ef4..15bfda8d2c8 100644 --- a/doc/src/sgml/syntax.sgml +++ b/doc/src/sgml/syntax.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.26 2000/12/14 22:30:56 petere Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.27 2000/12/16 18:22:53 tgl Exp $ --> <chapter id="syntax"> @@ -791,7 +791,7 @@ sqrt(emp.salary) <para> A <firstterm>target list</firstterm> - is a parenthesized, comma-separated list of one or more elements, each + is a comma-separated list of one or more elements, each of which must be of the form: <synopsis> @@ -799,16 +799,13 @@ sqrt(emp.salary) </synopsis> where <replaceable>result_attname</replaceable> - is the name of the attribute to be created (or an - already existing attribute name in the case of update statements.) If + is the name to be assigned to the created column. If <replaceable>result_attname</replaceable> - is not present, then - <replaceable>a_expr</replaceable> - must contain only one attribute name which is assumed to be the name - of the result field. In <productname>Postgres</productname> - default naming is only used if - <replaceable>a_expr</replaceable> - is an attribute. + is not present, then <productname>Postgres</productname> selects a + default name based on the contents of <replaceable>a_expr</replaceable>. + If <replaceable>a_expr</replaceable> is a simple attribute reference + then the default name will be the same as that attribute's name, but + otherwise the implementation is free to assign any default name. </para> </sect2> |