Copy data from Azure Database for PostgreSQL using Azure Data Factory

This article outlines how to use the Copy Activity in Azure Data Factory to copy data from Azure Database for PostgreSQL. It builds on the copy activity overview article that presents a general overview of copy activity.

Supported capabilities

You can copy data from Azure Database for PostgreSQL to any supported sink data store. For a list of data stores that are supported as sources/sinks by the copy activity, see the Supported data stores table.

Azure Data Factory provides a built-in driver to enable connectivity, therefore you don't need to manually install any driver using this connector.

Getting started

You can use one of the following tools or SDKs to use the copy activity with a pipeline. Select a link for step-by-step instructions:

The following sections provide details about properties that are used to define Data Factory entities specific to Azure Database for PostgreSQL connector.

Linked service properties

The following properties are supported for Azure Database for PostgreSQL linked service:

Property Description Required
type The type property must be set to: AzurePostgreSql Yes
connectionString An ODBC connection string to connect to Azure Database for PostgreSQL.
Mark this field as a SecureString to store it securely in Data Factory. You can also put password in Azure Key Vault and pull the password configuration out of the connection string. Refer to the following samples and Store credentials in Azure Key Vault article with more details.
Yes
connectVia The Integration Runtime to be used to connect to the data store. You can use Azure Integration Runtime or Self-hosted Integration Runtime (if your data store is located in private network). If not specified, it uses the default Azure Integration Runtime. No

A typical connection string is Server=<server>.postgres.database.azure.com;Database=<database>;Port=<port>;UID=<username>;Password=<Password>. More properties you can set per your case:

Property Description Options Required
EncryptionMethod (EM) The method the driver uses to encrypt data sent between the driver and the database server. E.g. ValidateServerCertificate=<0/1/6>; 0 (No Encryption) (Default) / 1 (SSL) / 6 (RequestSSL) No
ValidateServerCertificate (VSC) Determines whether the driver validates the certificate that is sent by the database server when SSL encryption is enabled (Encryption Method=1). E.g. ValidateServerCertificate=<0/1>; 0 (Disabled) (Default) / 1 (Enabled) No

Example:

{
    "name": "AzurePostgreSqlLinkedService",
    "properties": {
        "type": "AzurePostgreSql",
        "typeProperties": {
            "connectionString": {
                "type": "SecureString",
                "value": "Server=<server>.postgres.database.azure.com;Database=<database>;Port=<port>;UID=<username>;Password=<Password>"
            }
        }
    }
}

Example: store password in Azure Key Vault

{
    "name": "AzurePostgreSqlLinkedService",
    "properties": {
        "type": "AzurePostgreSql",
        "typeProperties": {
            "connectionString": {
                 "type": "SecureString",
                 "value": "Server=<server>.postgres.database.azure.com;Database=<database>;Port=<port>;UID=<username>;"
            },
            "password": { 
                "type": "AzureKeyVaultSecret", 
                "store": { 
                    "referenceName": "<Azure Key Vault linked service name>", 
                    "type": "LinkedServiceReference" 
                }, 
                "secretName": "<secretName>" 
            }
        }
    }
}

Dataset properties

For a full list of sections and properties available for defining datasets, see the datasets article. This section provides a list of properties supported by Azure Database for PostgreSQL dataset.

To copy data from Azure Database for PostgreSQL, set the type property of the dataset to AzurePostgreSqlTable. The following properties are supported:

Property Description Required
type The type property of the dataset must be set to: AzurePostgreSqlTable Yes
tableName Name of the table. No (if "query" in activity source is specified)

Example

{
    "name": "AzurePostgreSqlDataset",
    "properties": {
        "type": "AzurePostgreSqlTable",
        "linkedServiceName": {
            "referenceName": "<AzurePostgreSql linked service name>",
            "type": "LinkedServiceReference"
        },
        "typeProperties": {}
    }
}

Copy activity properties

For a full list of sections and properties available for defining activities, see the Pipelines article. This section provides a list of properties supported by Azure Database for PostgreSQL source.

Azure Database for PostgreSql as source

To copy data from Azure Database for PostgreSQL, set the source type in the copy activity to AzurePostgreSqlSource. The following properties are supported in the copy activity source section:

Property Description Required
type The type property of the copy activity source must be set to: AzurePostgreSqlSource Yes
query Use the custom SQL query to read data. For example: "SELECT * FROM MyTable". No (if "tableName" in dataset is specified)

Example:

"activities":[
    {
        "name": "CopyFromAzurePostgreSql",
        "type": "Copy",
        "inputs": [
            {
                "referenceName": "<AzurePostgreSql input dataset name>",
                "type": "DatasetReference"
            }
        ],
        "outputs": [
            {
                "referenceName": "<output dataset name>",
                "type": "DatasetReference"
            }
        ],
        "typeProperties": {
            "source": {
                "type": "AzurePostgreSqlSource",
                "query": "<custom query e.g. SELECT * FROM MyTable>"
            },
            "sink": {
                "type": "<sink type>"
            }
        }
    }
]

Next steps

For a list of data stores supported as sources and sinks by the copy activity in Azure Data Factory, see supported data stores.