Add lock matrix to documentation.

Teodor Sigaev

diff --git a/doc/src/sgml/mvcc.sgml b/doc/src/sgml/mvcc.sgml
index 20b1ed58edd35cfba9e77255dcdbab8cbfab2548..c6f6aba4ba78575a69b0bace94fde82561e4314a 100644 (file)
--- a/doc/src/sgml/mvcc.sgml
+++ b/doc/src/sgml/mvcc.sgml
@@ -741,6 +741,123 @@ SELECT SUM(value) FROM mytab WHERE class = 2;
     releases locks acquired within it.
    </para>
 
+    <table tocentry="1" id="table-lock-compatibility">
+     <title> Compatibility of lock modes</title>
+     <tgroup cols="9">
+      <colspec colnum="1" colwidth="1*">
+      <colspec colnum="2" colwidth="1*">
+      <colspec colnum="3" colwidth="1*">
+      <colspec colnum="4" colwidth="1*">
+      <colspec colnum="5" colwidth="1*">
+      <colspec colnum="6" colwidth="1*">
+      <colspec colnum="7" colwidth="1*">
+      <colspec colnum="8" colwidth="1*">
+      <colspec colnum="9" colwidth="1*">
+      <thead>
+          <row>
+        <entry>Modes</entry>
+        <entry>AS</entry>
+        <entry>RS</entry>
+        <entry>RE</entry>
+        <entry>SUE</entry>
+        <entry>S</entry>
+        <entry>SRE</entry>
+        <entry>E</entry>
+        <entry>AE</entry>
+          </row>
+         </thead>
+         <tbody>
+          <row>
+        <entry>AS</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>RS</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>RE</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>SUE</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>S</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>SRE</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>E</entry>
+        <entry align="center">Y</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+          <row>
+        <entry>AE</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+        <entry align="center">N</entry>
+          </row>
+         </tbody>
+        </tgroup>
+       </table>
    </sect2>
 
    <sect2 id="locking-rows">