if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ; # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" ; MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" ; $MC_COMMAND ; STATUS=$? ; until [ $STATUS = 0 ] do ATTEMPTS=`expr $ATTEMPTS + 1` ; echo \"Failed attempts: $ATTEMPTS\" ; if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 ; fi ; sleep 2 ;...

{* ../../docs_src/query_params_str_validations/tutorial008_an_py310.py hl[14] *}

## 别名参数 { #alias-parameters }

假设你想要参数名为 `item-query`。

像这样：

```
http://127.0.0.1:8000/items/?item-query=foobaritems
```

但 `item-query` 不是有效的 Python 变量名。

最接近的有效名称是 `item_query`。

但你仍然需要它在 URL 中就是 `item-query`...

这时可以用 `alias` 参数声明一个别名，FastAPI 会用该别名在 URL 中查找参数值：

        // Test Domain Group SID (type 2)
        assertEquals("2Domain Group", sambaHelper.getAccountId(createMockSID(2, "Domain Group")));

        // Test Alias SID (type 4, mapped to 2)
        assertEquals("2Local Group", sambaHelper.getAccountId(createMockSID(4, "Local Group")));

        // Test Well-Known Group SID (type 5, mapped to 1)

-e # fail if we can't read the keys. ACCESS=$(cat /config/rootUser) SECRET=$(cat /config/rootPassword) set +e # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" $MC_COMMAND STATUS=$? until [ $STATUS = 0 ]; do ATTEMPTS=$(expr $ATTEMPTS + 1) echo \"Failed attempts: $ATTEMPTS\" if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 fi sleep 2 # 1 second intervals...

```

## Create a bucket and upload some data

Create a bucket named `functionbucket`
```
mc alias set myminio/ http://localhost:9000 minioadmin minioadmin
mc mb myminio/functionbucket
```

Create a file `testobject` with some test data that will be transformed
```
cat > testobject << EOF

				write(v.Raw, stmt.Table)
			} else if stmt.AddError(stmt.Parse(stmt.Model)) == nil {
				write(v.Raw, stmt.Table)
			}
		} else {
			write(v.Raw, v.Name)
		}

		if v.Alias != "" {
			writer.WriteByte(' ')
			write(v.Raw, v.Alias)
		}
	case clause.Column:
		if v.Table != "" {
			if v.Table == clause.CurrentTable {
				write(v.Raw, stmt.Table)
			} else {
				write(v.Raw, v.Table)
			}

if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ; # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" ; MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" ; $MC_COMMAND ; STATUS=$? ; until [ $STATUS = 0 ] do ATTEMPTS=`expr $ATTEMPTS + 1` ; echo \"Failed attempts: $ATTEMPTS\" ; if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 ; fi ; sleep 2 ;...

-e # fail if we can't read the keys. ACCESS=$(cat /config/rootUser) SECRET=$(cat /config/rootPassword) set +e # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" $MC_COMMAND STATUS=$? until [ $STATUS = 0 ]; do ATTEMPTS=$(expr $ATTEMPTS + 1) echo \"Failed attempts: $ATTEMPTS\" if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 fi sleep 2 # 1 second intervals...

if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ; # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" ; MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" ; $MC_COMMAND ; STATUS=$? ; until [ $STATUS = 0 ] do ATTEMPTS=`expr $ATTEMPTS + 1` ; echo \"Failed attempts: $ATTEMPTS\" ; if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 ; fi ; sleep 2 ;...

if we can't read the keys. ACCESS=$(cat /config/rootUser) ; SECRET=$(cat /config/rootPassword) ; set +e ; # The connections to minio are allowed to fail. echo "Connecting to MinIO server: $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT" ; MC_COMMAND="${MC} alias set myminio $SCHEME://$MINIO_ENDPOINT:$MINIO_PORT $ACCESS $SECRET" ; $MC_COMMAND ; STATUS=$? ; until [ $STATUS = 0 ] do ATTEMPTS=`expr $ATTEMPTS + 1` ; echo \"Failed attempts: $ATTEMPTS\" ; if [ $ATTEMPTS -gt $LIMIT ]; then exit 1 ; fi ; sleep 2 ;...