From f158e87159c96f9ef1a7fd15f3688dbdc2c4edb2 Mon Sep 17 00:00:00 2001
From: jingxiaobing <jingxiaobing@gmail.com>
Date: Fri, 10 Aug 2018 15:42:59 +0800
Subject: [PATCH] fix bug: HAVING field check

---
 .gitignore                      | 1 +
 plugins/shard/sharding-parser.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/.gitignore b/.gitignore
index 84edc21..740b12e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ tests/
 TAGS
 edeProject.el
 core
+.cquery_cached_index/
 
 # gtags file
 GTAGS
diff --git a/plugins/shard/sharding-parser.c b/plugins/shard/sharding-parser.c
index 0549a9f..8b8d761 100644
--- a/plugins/shard/sharding-parser.c
+++ b/plugins/shard/sharding-parser.c
@@ -1670,6 +1670,9 @@ select_check_HAVING_column(sql_select_t *select)
     gboolean found = FALSE;     /* found having cond in columns */
     int num_aggregate = 0;
     const char *having_func = having->left->token_text;
+    if (!having_func) {
+        return FALSE;
+    }
     sql_expr_list_t *columns = select->columns;
     int i;
     for (i = 0; columns && i < columns->len; ++i) {