fixes #864

Author: wumpz

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -3196,7 +3196,8 @@ AnalyticExpression AnalyticExpression(Function function) :
 
     "("
         [<K_PARTITION> <K_BY> 
-            (LOOKAHEAD(3) expressionList=SimpleExpressionList() | "(" {partitionByBrackets = true;} expressionList=SimpleExpressionList() ")" ) 
+            (LOOKAHEAD(ComplexExpressionList()) expressionList=ComplexExpressionList() 
+            | "(" {partitionByBrackets = true;} expressionList=ComplexExpressionList() ")" ) 
         ]
         [olist=OrderByElements() ]
         [windowElement = WindowElement() ]

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -1900,6 +1900,16 @@ public void testAnalyticFunctionIssue670() throws JSQLParserException {
     public void testAnalyticFunctionFilterIssue866() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("SELECT COUNT(*) FILTER (WHERE name = 'Raj') OVER (PARTITION BY name ) FROM table");
     }
+    
+    @Test
+    public void testAnalyticPartitionBooleanExpressionIssue864() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("SELECT COUNT(*) OVER (PARTITION BY (event = 'admit' OR event = 'family visit') ORDER BY day ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING) family_visits FROM patients");
+    }
+    
+    @Test
+    public void testAnalyticPartitionBooleanExpressionIssue864_2() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("SELECT COUNT(*) OVER (PARTITION BY (event = 'admit' OR event = 'family visit') ) family_visits FROM patients");
+    }
 
     @Test
     public void testFunctionLeft() throws JSQLParserException {