diff --git a/regression-test/data/nereids_function_p0/array/test_array_decimalv3(16,10).csv b/regression-test/data/nereids_function_p0/array/test_array_decimalv3(16,10).csv
new file mode 100644
index 00000000000000..2faf82e342c66f
--- /dev/null
+++ b/regression-test/data/nereids_function_p0/array/test_array_decimalv3(16,10).csv
@@ -0,0 +1,7 @@
+// this is data case file for array<bigint> type, contains normal, corner, exceptional data cases
+[]
+[null]
+NULL
+// single element
+[0]
+[12345.1234567890, 12345.1234567890, 12345.1234567890]
diff --git a/regression-test/data/nereids_function_p0/array/test_array_decimalv3(7,4).csv b/regression-test/data/nereids_function_p0/array/test_array_decimalv3(7,4).csv
new file mode 100644
index 00000000000000..41b97dda0bb93a
--- /dev/null
+++ b/regression-test/data/nereids_function_p0/array/test_array_decimalv3(7,4).csv
@@ -0,0 +1,9 @@
+// this is data case file for array<bigint> type, contains normal, corner, exceptional data cases
+[]
+[null]
+NULL
+// single element
+[0]
+[1,2,3,4,5,6,7,8,9,-1,-2,-3,-4,-5,-6,-7,-8,-9]
+[0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,-0.1,-0.2,-0.3,-0.4,-0.5,-0.6,-0.7,-0.8,-0.9]
+[345.6789, 345.6789, 345.6789]