[td-3009] <fix>: diff can not be applied to unsigned numeric data type.

6376cf2f · Haojun Liao · cfcec60f · 6376cf2f
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src/client/src/tscSQLParser.c src/client/src/tscSQLParser.c +2 -0

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--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -2023,6 +2023,8 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col

      if (!IS_NUMERIC_TYPE(colType)) {
        return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
+      } else if (IS_UNSIGNED_NUMERIC_TYPE(colType) && optr == TK_DIFF) {
+        return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg10);
      }

      int16_t resultType = 0;