From b2465ca45bebb737359db0c05a5c1a9478376bb7 Mon Sep 17 00:00:00 2001
From: Lukas Eder <lukas.eder@gmail.com>
Date: Tue, 23 Nov 2021 14:09:25 +0100
Subject: [PATCH] [jOOQ/jOOQ#12645] Parser should support PostgreSQL date part
 syntaxes with explicit type casts

---
 jOOQ/src/main/java/org/jooq/impl/ParserImpl.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index accc49d036..6348fbbab6 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -10106,6 +10106,11 @@ final class DefaultParseContext extends AbstractScope implements ParseContext {
         else if (string)
             parse('\'');
 
+        // [#12645] In PostgreSQL, function based indexes tend to cast the
+        //          date part to a type explicitly
+        if (parseIf("::"))
+            parseDataType();
+
         return result;
     }