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CREATE STAGE

Creates a stage.

Syntax

-- Internal stage
CREATE STAGE [ IF NOT EXISTS ] <internal_stage_name>
[ FILE_FORMAT = ( { TYPE = { CSV | PARQUET } [ formatTypeOptions ] ) } ]
[ COPY_OPTIONS = ( copyOptions ) ]
[ COMMENT = '<string_literal>' ]

-- External stage
CREATE STAGE [ IF NOT EXISTS ] <external_stage_name>
externalStageParams
[ FILE_FORMAT = ( { TYPE = { CSV | PARQUET } [ formatTypeOptions ] ) } ]
[ COPY_OPTIONS = ( copyOptions ) ]
[ COMMENT = '<string_literal>' ]

Where:

externalStageParams

AWS S3 compatible object storage services:

externalStageParams ::=
URL = 's3://<bucket>[<path/>]'
CONNECTION = (
ENDPOINT_URL = 'https://<endpoint-URL>'
ACCESS_KEY_ID = '<your-access-key-ID>'
SECRET_ACCESS_KEY = '<your-secret-access-key>'
REGION = '<region-name>'
ENABLE_VIRTUAL_HOST_STYLE = 'true'|'false'
)
参数DescriptionRequired
URLExternal files located at the AWS S3 compatible object storage.Optional
ENDPOINT_URLThe bucket endpoint URL starting with "https://". To use a URL starting with "http://", set allow_insecure to true in the [storage] block of the file databend-query-node.toml.Optional
ACCESS_KEY_IDYour access key ID for connecting the AWS S3 compatible object storage. If not provided, Databend will access the bucket anonymously.Optional
SECRET_ACCESS_KEYYour secret access key for connecting the AWS S3 compatible object storage.Optional
REGIONAWS region name. For example, us-east-1.Optional
ENABLE_VIRTUAL_HOST_STYLEIf you use virtual hosting to address the bucket, set it to "true".Optional

Azure Blob storage:

externalStageParams ::=
URL = 'azblob://<container>[<path/>]'
CONNECTION = (
ENDPOINT_URL = 'https://<endpoint-URL>'
ACCOUT_NAME = '<your-account-name>'
ACCOUNT_KEY = '<your-account-key>'
)
参数DescriptionRequired
URLExternal files located at the Azure Blob storage.Required
ENDPOINT_URLThe container endpoint URL starting with "https://". To use a URL starting with "http://", set allow_insecure to true in the [storage] block of the file databend-query-node.toml.Optional
ACCOUNT_NAMEYour account name for connecting the Azure Blob storage. If not provided, Databend will access the container anonymously.Optional
ACCOUNT_KEYYour account key for connecting the Azure Blob storage.Optional

formatTypeOptions

formatTypeOptions ::=
RECORD_DELIMITER = '<character>'
FIELD_DELIMITER = '<character>'
SKIP_HEADER = <integer>
ParametersDescriptionRequired
RECORD_DELIMITER = '<character>'One characters that separate records in an input file. Default '\n'Optional
FIELD_DELIMITER = '<character>'One characters that separate fields in an input file. Default ','Optional
SKIP_HEADER = <integer>Number of lines at the start of the file to skip. Default 0Optional

copyOptions

copyOptions ::=
[ SIZE_LIMIT = <num> ]
[ PURGE = <bool> ]
ParametersDescriptionRequired
SIZE_LIMIT = <num>Number (> 0) that specifies the maximum rows of data to be loaded for a given COPY statement. Default 0Optional
PURGE = <bool>True specifies that the command will purge the files in the stage if they are loaded successfully into table. Default falseOptional

Examples

Internal Stages

CREATE STAGE my_internal_stage;

External Stages

CREATE STAGE my_s3_stage url='s3://load/files/' connection=(aws_key_id='1a2b3c' aws_secret_key='4x5y6z');
DESC STAGE my_s3_stage;
+-------------+------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------+--------------------------------------------------------------------------------------------------------------------+---------+
| name | stage_type | stage_params | copy_options | file_format_options | comment |
+-------------+------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------+--------------------------------------------------------------------------------------------------------------------+---------+
| my_s3_stage | External | StageParams { storage: S3(StageS3Storage { bucket: "load", path: "/files/", credentials_aws_key_id: "", credentials_aws_secret_key: "", encryption_master_key: "" }) } | CopyOptions { on_error: None, size_limit: 0 } | FileFormatOptions { format: Csv, skip_header: 0, field_delimiter: ",", record_delimiter: "\n", compression: None } | |
+-------------+------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----------------------------------------------+--------------------------------------------------------------------------------------------------------------------+---------+