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The attached patch implements START TRANSACTION, per SQL99. The

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functionality of the command is basically identical to that of
BEGIN; it just accepts a few extra options (only one of which
PostgreSQL currently implements), and is standards-compliant.
The patch includes a simple regression test and documentation.

[ Regression tests removed, per Peter.]

Neil Conway
This commit is contained in:
Bruce Momjian
2002-08-04 04:31:44 +00:00
parent fecc04f95a
commit 19e0e35bcd
10 changed files with 74 additions and 49 deletions
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12
doc/src/sgml/ref/set_transaction.sgml
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@@ -1,4 +1,4 @@
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_transaction.sgml,v 1.8 2002/01/20 22:19:57 petere Exp $ -->
<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/set_transaction.sgml,v 1.9 2002/08/04 04:31:44 momjian Exp $ -->
<refentry id="SQL-SET-TRANSACTION">
<docinfo>
<date>2000-11-24</date>
@@ -97,11 +97,11 @@ SET default_transaction_isolation = '<replaceable>value</replaceable>'
<title>SQL92, SQL99</title>
<para>
SERIALIZABLE is the default level in <acronym>SQL</acronym>.
<productname>PostgreSQL</productname> does not provide the
isolation levels <option>READ UNCOMMITTED</option>
and <option>REPEATABLE READ</option>. Because
of multiversion concurrency control, the serializable level is not
<option>SERIALIZABLE</option> is the default level in
<acronym>SQL</acronym>. <productname>PostgreSQL</productname> does
not provide the isolation levels <option>READ UNCOMMITTED</option>
and <option>REPEATABLE READ</option>. Because of multiversion
concurrency control, the <option>SERIALIZABLE</option> level is not
truly serializable. See the <citetitle>User's Guide</citetitle> for
details.
</para>