diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 96a896c2b2ccd1211b98ab7c97168f1cc82bca00..692fb8046dcc7ae9399b86e919d78efe2fb07b89 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -2936,13 +2936,15 @@ void tscDequoteAndTrimToken(SStrToken* pToken) {
   }
 
   // there are still at least two characters
-  if (first < last - 1) {
+  while (first < last - 1) {
     char c = pToken->z[first];
     // dequote
     if ((c == '\'' || c == '"') && c == pToken->z[last - 1]) {
       first++;
       last--;
+      continue;
     }
+    break;
   }
 
   // left shift the string and pad spaces
diff --git a/tests/examples/c/apitest b/tests/examples/c/apitest
new file mode 100755
index 0000000000000000000000000000000000000000..8b3f223c32f61160ef243e13ddfd40fbb788464e
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diff --git a/tests/examples/c/asyncdemo b/tests/examples/c/asyncdemo
new file mode 100755
index 0000000000000000000000000000000000000000..1059567c6e65bb92b8cec2d4a10869a84fa37a34
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diff --git a/tests/examples/c/demo b/tests/examples/c/demo
new file mode 100755
index 0000000000000000000000000000000000000000..a84ab6050c553b259fa524b0f82bf60d8e19ac19
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diff --git a/tests/examples/c/prepare b/tests/examples/c/prepare
new file mode 100755
index 0000000000000000000000000000000000000000..bfc0c7f7329561dfae3c3ea9922f7ee5cf5bb113
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diff --git a/tests/examples/c/stream b/tests/examples/c/stream
new file mode 100755
index 0000000000000000000000000000000000000000..2932d5ee62971d3227e086eec53e42b6479b4abe
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diff --git a/tests/examples/c/subscribe b/tests/examples/c/subscribe
new file mode 100755
index 0000000000000000000000000000000000000000..7321d9e9a88e069458781b3cbd0501fc84006306
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