diff options
| -rw-r--r-- | doc/FAQ | 12 | ||||
| -rw-r--r-- | doc/src/FAQ/FAQ.html | 12 |
2 files changed, 8 insertions, 16 deletions
@@ -1,7 +1,7 @@ Frequently Asked Questions (FAQ) for PostgreSQL - Last updated: Sat Oct 13 01:26:55 EDT 2001 + Last updated: Sun Oct 14 19:27:20 EDT 2001 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) @@ -826,10 +826,8 @@ BYTEA bytea variable-length byte array (null-safe) object with the nextval() function before inserting and then insert it explicitly. Using the example table in 4.16.1, that might look like this in Perl: - $sql = "SELECT nextval('person_id_seq')"; - $newSerialID = ($conn->selectrow_array($sql))[0]; - INSERT INTO person (id, name) VALUES ($newSerialID, 'Blaise Pascal'); - $res = $dbh->do($sql); + new_id = output of "SELECT nextval('person_id_seq')" + INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal'); You would then also have the new value stored in $newSerialID for use in other queries (e.g., as a foreign key to the person table). Note @@ -840,9 +838,7 @@ BYTEA bytea variable-length byte array (null-safe) Alternatively, you could retrieve the assigned SERIAL value with the currval() function after it was inserted by default, e.g., INSERT INTO person (name) VALUES ('Blaise Pascal'); - $res = $conn->do($sql); - $sql = "SELECT currval('person_id_seq')"; - $newSerialID = ($conn->selectrow_array($sql))[0]; + new_id = output of "SELECT currval('person_id_seq')"; Finally, you could use the OID returned from the INSERT statement to look up the default value, though this is probably the least portable diff --git a/doc/src/FAQ/FAQ.html b/doc/src/FAQ/FAQ.html index d3f5da6f8f0..efb5724282e 100644 --- a/doc/src/FAQ/FAQ.html +++ b/doc/src/FAQ/FAQ.html @@ -12,7 +12,7 @@ alink="#0000FF"> <H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1> - <P>Last updated: Sat Oct 13 01:26:55 EDT 2001</P> + <P>Last updated: Sun Oct 14 19:27:20 EDT 2001</P> <P>Current maintainer: Bruce Momjian (<A href= "mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR> @@ -1050,10 +1050,8 @@ BYTEA bytea variable-length byte array (null-safe) example table in <A href="#4.16.1">4.16.1</A>, that might look like this in Perl:</P> <PRE> - $sql = "SELECT nextval('person_id_seq')"; - $newSerialID = ($conn->selectrow_array($sql))[0]; - INSERT INTO person (id, name) VALUES ($newSerialID, 'Blaise Pascal'); - $res = $dbh->do($sql); + new_id = output of "SELECT nextval('person_id_seq')" + INSERT INTO person (id, name) VALUES (new_id, 'Blaise Pascal'); </PRE> You would then also have the new value stored in <CODE>$newSerialID</CODE> for use in other queries (e.g., as a @@ -1068,9 +1066,7 @@ BYTEA bytea variable-length byte array (null-safe) <I>after</I> it was inserted by default, e.g.,</P> <PRE> INSERT INTO person (name) VALUES ('Blaise Pascal'); - $res = $conn->do($sql); - $sql = "SELECT currval('person_id_seq')"; - $newSerialID = ($conn->selectrow_array($sql))[0]; + new_id = output of "SELECT currval('person_id_seq')"; </PRE> Finally, you could use the <A href="#4.17"><SMALL>OID</SMALL></A> returned from the <SMALL>INSERT</SMALL> statement to look up the |