From b139daf08bbcdd958e9e930413f1ea87fb691a41 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Sat, 25 Jun 2022 13:32:14 +0800
Subject: [PATCH] add cast function support ->bool

---
 source/libs/scalar/src/sclfunc.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/source/libs/scalar/src/sclfunc.c b/source/libs/scalar/src/sclfunc.c
index 4caccfc7f3..80bebafef2 100644
--- a/source/libs/scalar/src/sclfunc.c
+++ b/source/libs/scalar/src/sclfunc.c
@@ -915,6 +915,24 @@ int32_t castFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutp
         }
         break;
       }
+      case TSDB_DATA_TYPE_BOOL: {
+        if (inputType == TSDB_DATA_TYPE_BINARY) {
+          *(bool *)output = taosStr2Int8(varDataVal(input), NULL, 10);
+        } else if (inputType == TSDB_DATA_TYPE_NCHAR) {
+          char *newBuf = taosMemoryCalloc(1, inputLen);
+          int32_t len  = taosUcs4ToMbs((TdUcs4 *)varDataVal(input), varDataLen(input), newBuf);
+          if (len < 0) {
+            taosMemoryFree(newBuf);
+            return TSDB_CODE_FAILED;
+          }
+          newBuf[len] = 0;
+          *(bool *)output = taosStr2Int8(newBuf, NULL, 10);
+          taosMemoryFree(newBuf);
+        } else {
+          GET_TYPED_DATA(*(bool *)output, bool, inputType, input);
+        }
+        break;
+      }
       case TSDB_DATA_TYPE_TIMESTAMP: {
         if (inputType == TSDB_DATA_TYPE_BINARY || inputType == TSDB_DATA_TYPE_NCHAR) {
           //convert to 0
-- 
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