diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 1e71954278..8dfca36a15 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -1576,9 +1576,13 @@ int32_t leastSQRFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
 
   param12 /= param[1][1];
 
-  char   buf[512] = {0};
-  size_t len =
-      snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6lf, intercept:%.6lf}", param02, param12);
+  char   buf[64] = {0};
+  size_t len = 0;
+  if (fabs(param02) > 1e6 || fabs(param12) > 1e6) {
+    len = snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6e, intercept:%.6e}", param02, param12);
+  } else {
+    len = snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6lf, intercept:%.6lf}", param02, param12);
+  }
   varDataSetLen(buf, len);
 
   colDataSetVal(pCol, currentRow, buf, pResInfo->isNullRes);
diff --git a/source/libs/scalar/src/sclfunc.c b/source/libs/scalar/src/sclfunc.c
index e713043b80..500a126b64 100644
--- a/source/libs/scalar/src/sclfunc.c
+++ b/source/libs/scalar/src/sclfunc.c
@@ -2428,8 +2428,12 @@ int32_t leastSQRScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarPa
     matrix12 /= matrix[1][1];
 
     char   buf[64] = {0};
-    size_t len = snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6lf, intercept:%.6lf}", matrix02,
-                          matrix12);
+    size_t len = 0;
+    if (fabs(matrix02) > 1e6 || fabs(matrix12) > 1e6) {
+      len = snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6e, intercept:%.6e}", matrix02, matrix12);
+    } else {
+      len = snprintf(varDataVal(buf), sizeof(buf) - VARSTR_HEADER_SIZE, "{slop:%.6lf, intercept:%.6lf}", matrix02, matrix12);
+    }
     varDataSetLen(buf, len);
     colDataSetVal(pOutputData, 0, buf, false);
   }