From 1ce01d707332a224e5b94b43db71650e4375e15b Mon Sep 17 00:00:00 2001
From: lingo-xp <36907211+lingo-xp@users.noreply.github.com>
Date: Fri, 6 Dec 2024 10:17:06 +0800
Subject: [PATCH] Fix parse empty assign item issue. (#6272)

* Fix parse empty assign item issue.

* Set PPROX_QUANTILES as agg function.

* Set PPROX_QUANTILES as agg function.

* Fix.

---------

Co-authored-by: Shaojin Wen <shaojin.wensj@alibaba-inc.com>
---
 .../druid/sql/parser/SQLExprParser.java       | 18 +++---
 .../test/resources/bvt/parser/bigquery/0.txt  | 59 +++++++++++++++++++
 2 files changed, 69 insertions(+), 8 deletions(-)

diff --git a/core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java b/core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
index 0259a1f3fe..47886440d4 100644
--- a/core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
+++ b/core/src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java
@@ -5178,15 +5178,17 @@ public SQLUnique parseUnique() {
 
     public void parseAssignItem(List<SQLAssignItem> outList, SQLObject parent) {
         accept(Token.LPAREN);
-        for (; ; ) {
-            SQLAssignItem item = this.parseAssignItem(true, parent);
-            item.setParent(parent);
-            outList.add(item);
-            if (lexer.token() == Token.COMMA) {
-                lexer.nextToken();
-                continue;
+        if (lexer.token() != Token.RPAREN) {
+            for (; ; ) {
+                SQLAssignItem item = this.parseAssignItem(true, parent);
+                item.setParent(parent);
+                outList.add(item);
+                if (lexer.token() == Token.COMMA) {
+                    lexer.nextToken();
+                    continue;
+                }
+                break;
             }
-            break;
         }
         accept(Token.RPAREN);
     }
diff --git a/core/src/test/resources/bvt/parser/bigquery/0.txt b/core/src/test/resources/bvt/parser/bigquery/0.txt
index 552b08cf82..cafa7d06b7 100644
--- a/core/src/test/resources/bvt/parser/bigquery/0.txt
+++ b/core/src/test/resources/bvt/parser/bigquery/0.txt
@@ -1,3 +1,62 @@
+create temporary function poly(polygon string)
+returns string language js as """
+var res = JSON.parse(polygon);
+var l = res.length;
+var i;
+for (i=0; i<l; i++) {
+  temp = res[i][0]
+  res[i][0] = res[i][1]
+  res[i][1] = temp
+};
+var last = [res[0][0],res[0][1]];
+res.push(last);
+var geojson = {"type": "Polygon", "coordinates" : [res]}
+return JSON.stringify(geojson);
+"""
+OPTIONS();
+--------------------
+CREATE TEMPORARY FUNCTION poly (
+	polygon string
+)
+RETURNS string
+LANGUAGE js
+AS """
+var res = JSON.parse(polygon);
+var l = res.length;
+var i;
+for (i=0; i<l; i++) {
+  temp = res[i][0]
+  res[i][0] = res[i][1]
+  res[i][1] = temp
+};
+var last = [res[0][0],res[0][1]];
+res.push(last);
+var geojson = {"type": "Polygon", "coordinates" : [res]}
+return JSON.stringify(geojson);
+""";
+------------------------------------------------------------------------------------------------------------------------
+CREATE TEMP FUNCTION myFunc(a FLOAT64, b STRING)
+RETURNS STRING
+LANGUAGE js
+AS r"""
+  // Assumes 'doInterestingStuff' is defined in one of the library files.
+  return doInterestingStuff(a, b);
+"""
+OPTIONS (
+    library=['gs://my-bucket/path/to/lib1.js', 'gs://my-bucket/path/to/lib2.js']);
+--------------------
+CREATE TEMPORARY FUNCTION myFunc (
+	a FLOAT64,
+	b STRING
+)
+RETURNS STRING
+LANGUAGE js
+OPTIONS (library = ['gs://my-bucket/path/to/lib1.js', 'gs://my-bucket/path/to/lib2.js'])
+AS """
+  // Assumes 'doInterestingStuff' is defined in one of the library files.
+  return doInterestingStuff(a, b);
+""";
+------------------------------------------------------------------------------------------------------------------------
 SELECT DATE(verify_timestamp, 'Asia/Jakarta') AS jakarta_data_date, app_version, device_platform as device_platform_name, 
 BU as business_unit_name, verification_method as verification_type,
   CAST(APPROX_QUANTILES(time_diff, 100 IGNORE NULLS)[OFFSET(50)] AS NUMERIC) AS p50_granted_time_in_second,