Update how to update test assets

Makefile

@@ -16,6 +16,9 @@ $(PROGRAM):
 test:
 	@go test -v ./... -covermode=atomic -coverprofile=coverage.out -race -compatible
 
+update_test:
+	@go test -v ./... -update -race -compatible
+
 lint:
 	@printf $(CCCOLOR)"GolangCI Lint...\n"$(ENDCOLOR)
 	@golangci-lint run --timeout 20m0s

README.md

@@ -47,6 +47,15 @@ $ clickhouse-sql-parser -format "SELECT * FROM clickhouse WHERE a=100"
 ## Parse query from file
 $ clickhouse-sql-parser -file ./test.sql
 ```
+## Update test assets
+
+For the files inside `output` and `format` dir are generated by the test cases,
+
+if you want to update them, you can run the following command:
+
+```bash
+$ make update_test
+```
 
 ## Contact us
 

parser/testdata/ddl/format/grant_privilege.sql

@@ -0,0 +1,18 @@
+-- Origin SQL:
+GRANT SELECT(x,y) ON db.table TO john;
+GRANT SELECT(x,y) ON db.table TO john WITH GRANT OPTION WITH ADMIN OPTION;
+GRANT SELECT(x,y) ON db.* TO john;
+GRANT SELECT(x,y) ON *.table TO john;
+GRANT SELECT(x,y) ON *.* TO john;
+GRANT SELECT(x,y) ON *.table TO CURRENT_USER;
+GRANT SELECT(x,y) ON *.table TO CURRENT_USER,john,mary;
+
+
+-- Format SQL:
+GRANT SELECT(x, y) ON db.table TO john;
+GRANT SELECT(x, y) ON db.table TO john WITH GRANT OPTION WITH ADMIN OPTION;
+GRANT SELECT(x, y) ON db.* TO john;
+GRANT SELECT(x, y) ON *.table TO john;
+GRANT SELECT(x, y) ON *.* TO john;
+GRANT SELECT(x, y) ON *.table TO CURRENT_USER;
+GRANT SELECT(x, y) ON *.table TO CURRENT_USER, john, mary;