discord9anddiscord9
5ef8a46e3f
* feat(function): add mergeable binary average states Signed-off-by: discord9 <discord9@163.com> * feat(function): expose avg_calc as an OSS scalar Signed-off-by: discord9 <discord9@163.com> * fix(function): borrow invalid AVG scalar argument type Signed-off-by: discord9 <discord9@163.com> * test(function): verify public AVG state SQL finalization Signed-off-by: discord9 <discord9@163.com> * fix(function): return canonical AVG1 state for empty window frames DataFusion's plain-aggregate window executor bypasses the accumulator and calls default_value() directly when a window frame contains no rows. create_udaf's SimpleAggregateUDF derives default_value from the return type, which yields SQL NULL for Binary output instead of the canonical AVG1 empty state, so empty frames and frames over only NULL inputs became observable differently (IS NULL, direct state saves, state comparisons). Register avg_state/avg_merge through a small AggregateUDFImpl (AvgUdaf) that keeps the existing accumulator and declares the canonical AVG1 empty state as default_value, restoring the documented contract. Add a unit test asserting default_value equals the empty accumulator's evaluate() and an sqlness case covering the empty-frame window. Signed-off-by: discord9 <discord9@outlook.com> --------- Signed-off-by: discord9 <discord9@163.com> Signed-off-by: discord9 <discord9@outlook.com> Co-authored-by: discord9 <discord9@outlook.com>
Sqlness Test
Sqlness manual
Case file
Sqlness has two types of file:
.sql: test input, SQL only.result: expected test output, SQL and its results
.result is the output (execution result) file. If you see .result files is changed,
it means this test gets a different result and indicates it fails. You should
check change logs to solve the problem.
You only need to write test SQL in .sql file, and run the test.
Case organization
The root dir of input cases is tests/cases. It contains several subdirectories stand for different test
modes. E.g., standalone/ contains all the tests to run under greptimedb standalone start mode.
Under the first level of subdirectory (e.g. the cases/standalone), you can organize your cases as you like.
Sqlness walks through every file recursively and runs them.
Kafka WAL
Sqlness supports Kafka WAL. You can either provide a Kafka cluster or let sqlness to start one for you.
To run test with kafka, you need to pass the option -w kafka. If no other options are provided, sqlness will use conf/kafka-cluster.yml to start a Kafka cluster. This requires docker and docker-compose commands in your environment.
Otherwise, you can additionally pass the your existing kafka environment to sqlness with -k option. E.g.:
cargo sqlness bare -w kafka -k localhost:9092
In this case, sqlness will not start its own kafka cluster and the one you provided instead.
Run the test
Unlike other tests, this harness is in a binary target form. You can run it with:
cargo sqlness bare
It automatically finishes the following procedures: compile GreptimeDB, start it, grab tests and feed it to
the server, then collect and compare the results. You only need to check if the .result files are changed.
If not, congratulations, the test is passed 🥳!