From d903df8ff8740ca1625e6b9d990974a8524ec1e1 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Sat, 16 Jan 2021 15:30:01 +0800
Subject: [PATCH] [TD-225]fix compiler error.

---
 src/client/src/tscSql.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index a8c872a2a3..a4f2976cad 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -839,7 +839,7 @@ int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields)
 
       case TSDB_DATA_TYPE_BINARY:
       case TSDB_DATA_TYPE_NCHAR: {
-        int32_t charLen = varDataLen(row[i] - VARSTR_HEADER_SIZE);
+        int32_t charLen = varDataLen((char*)row[i] - VARSTR_HEADER_SIZE);
         if (fields[i].type == TSDB_DATA_TYPE_BINARY) {
           assert(charLen <= fields[i].bytes);
         } else {
-- 
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