diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 02d5e11..dcd4be4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,3 +91,11 @@ jobs:
         run: |
           cd applications/sveltekit
           pnpm install
+
+  application-mydata:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build and run sample
+        run: |
+          cd applications/mydata
+          make && ./dist/mydata exp -h
diff --git a/applications/mydata/Makefile b/applications/mydata/Makefile
index 58f2ea3..f324e31 100644
--- a/applications/mydata/Makefile
+++ b/applications/mydata/Makefile
@@ -23,11 +23,7 @@ LDFLAGS += -X "$(REPO)/internal/version.GitHash=$(GITHASH)"
 LDFLAGS += -X "$(REPO)/internal/version.GitBranch=$(GITREF)"
 LDFLAGS += -X "$(REPO)/internal/version.GoVersion=$(GOVER)"
 
-all: gen conv mydata
+all: mydata
 
 mydata:
-	CGO_CFLAGS=-I$(IBM_DB_HOME)/include CGO_LDFLAGS=-L$(IBM_DB_HOME)/lib $(GOBUILD) -ldflags '$(LDFLAGS)' -o ./dist/mydata main.go
-gen:
-	CGO_CFLAGS=-I$(IBM_DB_HOME)/include CGO_LDFLAGS=-L$(IBM_DB_HOME)/lib $(GOBUILD) -ldflags '$(LDFLAGS)' -o ./dist/gen cmd/other/genschema/gen.go
-conv:
-	CGO_CFLAGS=-I$(IBM_DB_HOME)/include CGO_LDFLAGS=-L$(IBM_DB_HOME)/lib $(GOBUILD) -ldflags '$(LDFLAGS)' -o ./dist/conv cmd/other/conv/conv.go
+	$(GOBUILD) -ldflags '$(LDFLAGS)' -o ./dist/mydata main.go
diff --git a/applications/mydata/README.md b/applications/mydata/README.md
index 5c90334..deaa0ba 100644
--- a/applications/mydata/README.md
+++ b/applications/mydata/README.md
@@ -1,9 +1,9 @@
 # A Fast and Flexible export data from remote mysql server
 
-# how to use
+### how to use
 `go run main.go` or you can `go build -o mydata main.go && ./mydata -h`
 
-# cmd help 
+### cmd help
 
 ```text
 Usage:
@@ -23,4 +23,40 @@ Flags:
     -h, --help    help for mydata
 
 Use "mydata [command] --help" for more information about a command.
-```
\ No newline at end of file
+```
+
+### How to export data
+pls type help:
+`./mydata exp -h`
+
+```text
+Export data from remote database server
+
+Usage:
+  mydata export [flags]
+
+Aliases:
+  export, exp
+
+Flags:
+  -a, --addr string                mysql database addr, format: ip:port
+  -u, --username string            username for connect database
+  -p, --password string            password for connect database
+  -D, --dbname string              default database name
+  -e, --query-sql string           select sql
+  -o, --output string              output filename
+      --fields-terminated string   fields terminated (default ",")
+      --fields-enclosed string     fields enclosed
+      --fields-escaped string      fields escaped (default "\\")
+      --lines-terminated string    lines terminated (default "\n")
+      --enclosed-optionally        fields enclosed optionally
+      --params string              connection Params (default "timeout=3s")
+      --buf-size int               buf size for write outfile (default 32768)
+      --concurrency int            concurrency number (default 5)
+      --not-merge                  merge chunks to one file
+```
+### example
+export data by `select * from bigdata` from 127.0.0.1
+```shell
+./mydata exp -a 127.0.0.1:3306 -u username@tenant#clustername:clusterid -p xxx -D test -e "select * from bigdata" -o bigdata
+```