test: cover snapshot parquet restore compatibility

Signed-off-by: jeremyhi <fengjiachun@gmail.com>

tests/compatibility/cases/snapshot_parquet_copy/case.toml

@@ -0,0 +1,8 @@
+name = "snapshot_parquet_copy"
+reason = "Preserve explicit-file Parquet restore from snapshots written before packed import support."
+introduced_by = "packed snapshot reader"
+topologies = ["standalone"]
+from_range = ["*"]
+to_range = ["*"]
+features = ["copy", "parquet"]
+owner = "GreptimeTeam"

tests/compatibility/cases/snapshot_parquet_copy/setup.sql

@@ -0,0 +1,4 @@
+CREATE TABLE snapshot_values (ts TIMESTAMP TIME INDEX, val BIGINT);
+INSERT INTO snapshot_values VALUES (1, 42), (2, 7);
+COPY snapshot_values TO '${SQLNESS_HOME}/snapshot_parquet_copy/values.parquet' WITH (FORMAT='parquet');
+TRUNCATE TABLE snapshot_values;

tests/compatibility/cases/snapshot_parquet_copy/verify.result

@@ -0,0 +1,12 @@
+COPY snapshot_values FROM '${SQLNESS_HOME}/snapshot_parquet_copy/values.parquet' WITH (FORMAT='parquet');
+
+Affected Rows: 2
+
+SELECT * FROM snapshot_values ORDER BY ts;
+
++-------------------------+-----+
+| ts                      | val |
++-------------------------+-----+
+| 1970-01-01T00:00:00.001 | 42  |
+| 1970-01-01T00:00:00.002 | 7   |
++-------------------------+-----+

tests/compatibility/cases/snapshot_parquet_copy/verify.sql

@@ -0,0 +1,2 @@
+COPY snapshot_values FROM '${SQLNESS_HOME}/snapshot_parquet_copy/values.parquet' WITH (FORMAT='parquet');
+SELECT * FROM snapshot_values ORDER BY ts;