From 7bd06a856c3a27cd0f682edf27bea8530c17c441 Mon Sep 17 00:00:00 2001
From: lukaseder <lukas.eder@gmail.com>
Date: Tue, 17 Feb 2015 09:13:52 +0100
Subject: [PATCH] [#4064] Add PostgreSQL support for DSLContext.lastId()

---
 jOOQ/src/main/java/org/jooq/DSLContext.java   | 24 +++++++++++++------
 .../java/org/jooq/impl/DefaultDSLContext.java |  5 ++++
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/jOOQ/src/main/java/org/jooq/DSLContext.java b/jOOQ/src/main/java/org/jooq/DSLContext.java
index 88b85759ce..98f8c27b5f 100644
--- a/jOOQ/src/main/java/org/jooq/DSLContext.java
+++ b/jOOQ/src/main/java/org/jooq/DSLContext.java
@@ -5181,20 +5181,30 @@ public interface DSLContext extends Scope {
     /**
      * Retrieve the last inserted ID.
      * <p>
-     * Note, there are some restrictions to the following dialects:
+     * This is implemented for the following dialects:
      * <ul>
-     * <li> {@link SQLDialect#DB2} doesn't support this</li>
-     * <li> {@link SQLDialect#ORACLE} doesn't support this</li>
-     * <li> {@link SQLDialect#POSTGRES} doesn't support this</li>
-     * <li> {@link SQLDialect#SQLITE} supports this, but its support is poorly
-     * documented.</li>
+     * <li>{@link SQLDialect#ACCESS}: Using <code>@@identity</code></li>
+     * <li>{@link SQLDialect#ASE}: Using <code>@@identity</code></li>
+     * <li>{@link SQLDialect#CUBRID}: Using <code>last_insert_id()</code></li>
+     * <li>{@link SQLDialect#DERBY}: Using <code>identity_val_local()</code></li>
+     * <li>{@link SQLDialect#H2}: Using <code>identity()</code></li>
+     * <li>{@link SQLDialect#HSQLDB}: Using <code>identity()</code></li>
+     * <li>{@link SQLDialect#INFORMIX}: Using
+     * <code>dbinfo('sqlca.sqlerrd1')</code></li>
+     * <li>{@link SQLDialect#INGRES}: Using <code>last_identity()</code></li>
+     * <li>{@link SQLDialect#MARIADB}: Using <code>last_insert_id()</code></li>
+     * <li>{@link SQLDialect#MYSQL}: Using <code>last_insert_id()</code></li>
+     * <li>{@link SQLDialect#POSTGRES}: Using <code>lastval()</code></li>
+     * <li>{@link SQLDialect#SQLITE}: Using <code>last_insert_rowid()</code></li>
+     * <li>{@link SQLDialect#SQLSERVER}: Using <code>@@identity</code></li>
+     * <li>{@link SQLDialect#SYBASE}: Using <code>@@identity</code></li>
      * </ul>
      *
      * @return The last inserted ID. This may be <code>null</code> in some
      *         dialects, if no such number is available.
      * @throws DataAccessException if something went wrong executing the query
      */
-    @Support({ CUBRID, DERBY, H2, HSQLDB, MARIADB, MYSQL, SQLITE })
+    @Support({ CUBRID, DERBY, H2, HSQLDB, MARIADB, MYSQL, POSTGRES, SQLITE })
     BigInteger lastID() throws DataAccessException;
 
     /**
diff --git a/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java b/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
index 869f8317c0..17f767df1f 100644
--- a/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
+++ b/jOOQ/src/main/java/org/jooq/impl/DefaultDSLContext.java
@@ -1778,6 +1778,11 @@ public class DefaultDSLContext extends AbstractScope implements DSLContext, Seri
                 return select(field).fetchOne(field);
             }
 
+            case POSTGRES: {
+                Field<BigInteger> field = field("lastval()", BigInteger.class);
+                return select(field).fetchOne(field);
+            }
+
             /* [pro] xx
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