sqlness cases

Signed-off-by: tison <[email protected]>

src/common/meta/src/rpc/ddl.rs

@@ -179,6 +179,7 @@ pub struct DropTableTask {
     pub schema: String,
     pub table: String,
     pub table_id: TableId,
+    #[serde(default)]
     pub drop_if_exists: bool,
 }
 

tests/README.md

@@ -3,7 +3,9 @@
 ## Sqlness manual
 
 ### Case file
-Sqlness has two types of file
+
+Sqlness has two types of file:
+
 - `.sql`: test input, SQL only
 - `.result`: expected test output, SQL and its results
 
@@ -14,17 +16,21 @@ 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 sub-directories stand for different test
+
+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 sub-directory (e.g. the `cases/standalone`), you can organize your cases as you like.
+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.
 
 ## Run the test
-Unlike other tests, this harness is in a binary target form. You can run it with
+
+Unlike other tests, this harness is in a binary target form. You can run it with:
+
 ```shell
 cargo sqlness
 ```
+
 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 🥳!

tests/cases/standalone/common/drop/drop_table.result

@@ -0,0 +1,22 @@
+DROP TABLE IF EXISTS foo;
+
+Affected Rows: 0
+
+create table foo (
+     host string,
+     ts timestamp DEFAULT '2023-04-29 00:00:00+00:00',
+     cpu double default 0,
+     TIME INDEX (ts),
+     PRIMARY KEY(host)
+) engine=mito with(regions=1);
+
+Affected Rows: 0
+
+DROP TABLE IF EXISTS foo;
+
+Affected Rows: 0
+
+DROP TABLE IF EXISTS foo;
+
+Affected Rows: 0
+

tests/cases/standalone/common/drop/drop_table.sql

@@ -0,0 +1,13 @@
+DROP TABLE IF EXISTS foo;
+
+create table foo (
+     host string,
+     ts timestamp DEFAULT '2023-04-29 00:00:00+00:00',
+     cpu double default 0,
+     TIME INDEX (ts),
+     PRIMARY KEY(host)
+) engine=mito with(regions=1);
+
+DROP TABLE IF EXISTS foo;
+
+DROP TABLE IF EXISTS foo;