AgentSkillsCN

powerplatform-dataverseclient-python

PowerPlatform Dataverse 客户端 Python SDK 使用指南。在调用 SDK 时使用,例如创建 CRUD 操作、执行 SQL 查询、管理表元数据以及上传文件。

SKILL.md
--- frontmatter
name: powerplatform-dataverseclient-python
description: Guidance for using the PowerPlatform Dataverse Client Python SDK. Use when calling the SDK like creating CRUD operations, SQL queries, table metadata management, and upload files.

PowerPlatform Dataverse SDK Guide

Overview

Use the PowerPlatform Dataverse Client Python SDK to interact with Microsoft Dataverse.

Key Concepts

Schema Names vs Display Names

  • Standard tables: lowercase (e.g., "account", "contact")
  • Custom tables: include customization prefix (e.g., "new_Product", "cr123_Invoice")
  • Custom columns: include customization prefix (e.g., "new_Price", "cr123_Status")
  • ALWAYS use schema names (logical names), NOT display names

Bulk Operations

The SDK supports Dataverse's native bulk operations: Pass lists to create(), update() for automatic bulk processing, for delete(), set use_bulk_delete when passing lists to use bulk operation

Paging

  • Control page size with page_size parameter
  • Use top parameter to limit total records returned

Common Operations

Import

python
from azure.identity import (
    InteractiveBrowserCredential, 
    ClientSecretCredential,
    CertificateCredential,
    AzureCliCredential
)
from PowerPlatform.Dataverse.client import DataverseClient

Client Initialization

python
# Development options
credential = InteractiveBrowserCredential()
credential = AzureCliCredential()

# Production options
credential = ClientSecretCredential(tenant_id, client_id, client_secret)
credential = CertificateCredential(tenant_id, client_id, cert_path)

# Create client (no trailing slash on URL!)
client = DataverseClient("https://yourorg.crm.dynamics.com", credential)

CRUD Operations

Create Records

python
# Single record
account_ids = client.create("account", {"name": "Contoso Ltd", "telephone1": "555-0100"})
account_id = account_ids[0]

# Bulk create (uses CreateMultiple API automatically)
contacts = [
    {"firstname": "John", "lastname": "Doe"},
    {"firstname": "Jane", "lastname": "Smith"}
]
contact_ids = client.create("contact", contacts)

Read Records

python
# Get single record by ID
account = client.get("account", account_id, select=["name", "telephone1"])

# Query with filter
pages = client.get(
    "account",
    select=["accountid", "name"],      # select is case-insensitive (automatically lowercased)
    filter="statecode eq 0",           # filter must use lowercase logical names (not transformed)
    top=100
)
for page in pages:
    for record in page:
        print(record["name"])

# Query with navigation property expansion (case-sensitive!)
pages = client.get(
    "account",
    select=["name"],
    expand=["primarycontactid"],  # Navigation properties are case-sensitive!
    filter="statecode eq 0"       # Column names must be lowercase logical names
)
for page in pages:
    for account in page:
        contact = account.get("primarycontactid", {})
        print(f"{account['name']} - {contact.get('fullname', 'N/A')}")

Update Records

python
# Single update
client.update("account", account_id, {"telephone1": "555-0200"})

# Bulk update (broadcast same change to multiple records)
client.update("account", [id1, id2, id3], {"industry": "Technology"})

Delete Records

python
# Single delete
client.delete("account", account_id)

# Bulk delete (uses BulkDelete API)
client.delete("account", [id1, id2, id3], use_bulk_delete=True)

SQL Queries

SQL queries are read-only and support limited SQL syntax. A single SELECT statement with optional WHERE, TOP (integer literal), ORDER BY (column names only), and a simple table alias after FROM is supported. But JOIN and subqueries may not be. Refer to the Dataverse documentation for the current feature set.

python
# Basic SQL query
results = client.query_sql(
    "SELECT TOP 10 accountid, name FROM account WHERE statecode = 0"
)
for record in results:
    print(record["name"])

Table Management

Create Custom Tables

python
# Create table with columns (include customization prefix!)
table_info = client.create_table(
    table_schema_name="new_Product",
    columns={
        "new_Code": "string",
        "new_Price": "decimal",
        "new_Active": "bool",
        "new_Quantity": "int"
    }
)

# With solution assignment and custom primary column
table_info = client.create_table(
    table_schema_name="new_Product",
    columns={"new_Code": "string", "new_Price": "decimal"},
    solution_unique_name="MyPublisher",
    primary_column_schema_name="new_ProductCode"
)

Supported Column Types

Types on the same line map to the same exact format under the hood

  • "string" or "text" - Single line of text
  • "int" or "integer" - Whole number
  • "decimal" or "money" - Decimal number
  • "float" or "double" - Floating point number
  • "bool" or "boolean" - Yes/No
  • "datetime" or "date" - Date
  • Enum subclass - Local option set (picklist)

Manage Columns

python
# Add columns to existing table (must include customization prefix!)
client.create_columns("new_Product", {
    "new_Category": "string",
    "new_InStock": "bool"
})

# Remove columns
client.delete_columns("new_Product", ["new_Category"])

Inspect Tables

python
# Get single table information
table_info = client.get_table_info("new_Product")
print(f"Logical name: {table_info['table_logical_name']}")
print(f"Entity set: {table_info['entity_set_name']}")

# List all tables
tables = client.list_tables()
for table in tables:
    print(table)

Delete Tables

python
# Delete custom table
client.delete_table("new_Product")

File Operations

python
# Upload file to a file column
client.upload_file(
    table_schema_name="account",
    record_id=account_id,
    file_name_attribute="new_document",
    path="/path/to/document.pdf"
)

Error Handling

The SDK provides structured exceptions with detailed error information:

python
from PowerPlatform.Dataverse.core.errors import (
    DataverseError,
    HttpError,
    ValidationError,
    MetadataError,
    SQLParseError
)
from PowerPlatform.Dataverse.client import DataverseClient

try:
    client.get("account", "invalid-id")
except HttpError as e:
    print(f"HTTP {e.status_code}: {e.message}")
    print(f"Error code: {e.code}")
    print(f"Subcode: {e.subcode}")
    if e.is_transient:
        print("This error may be retryable")
except ValidationError as e:
    print(f"Validation error: {e.message}")

Common Error Patterns

Authentication failures:

  • Check environment URL format (no trailing slash)
  • Verify credentials have Dataverse permissions
  • Ensure app registration is properly configured

404 Not Found:

  • Verify table schema name is correct (lowercase for standard tables)
  • Check record ID exists
  • Ensure using schema names, not display names
  • Cache issue could happen, so retry might help, especially for metadata creation

400 Bad Request:

  • Check filter/expand parameters use correct case
  • Verify column names exist and are spelled correctly
  • Ensure custom columns include customization prefix

Best Practices

Performance Optimization

  1. Use bulk operations - Pass lists to create/update/delete for automatic optimization
  2. Specify select fields - Limit returned columns to reduce payload size
  3. Control page size - Use top and page_size parameters appropriately
  4. Reuse client instances - Don't create new clients for each operation
  5. Use production credentials - ClientSecretCredential or CertificateCredential for unattended operations
  6. Error handling - Implement retry logic for transient errors (e.is_transient)
  7. Always include customization prefix for custom tables/columns
  8. Use lowercase - Generally using lowercase input won't go wrong, except for custom table/column naming
  9. Test in non-production environments first

Additional Resources

Load these resources as needed during development:

Key Reminders

  1. Schema names are required - Never use display names
  2. Custom tables need prefixes - Include customization prefix (e.g., "new_")
  3. Filter is case-sensitive - Use lowercase logical names
  4. Bulk operations are encouraged - Pass lists for optimization
  5. No trailing slashes in URLs - Format: https://org.crm.dynamics.com
  6. Structured errors - Check is_transient for retry logic