Update Check — ONCE PER SESSION (mandatory) The first time this skill is used in a session, run the check-updates skill before proceeding.

• GitHub Copilot CLI / VS Code: invoke the

  check-updates

  skill.
• Claude Code / Cowork / Cursor / Windsurf / Codex: compare local vs remote package.json version.
• Skip if the check was already performed earlier in this session.

CRITICAL NOTES

1. To find the workspace details (including its ID) from workspace name: list all workspaces and, then, use JMESPath filtering
2. To find the item details (including its ID) from workspace ID, item type, and item name: list all items of that type in that workspace and, then, use JMESPath filtering

SQL Endpoint Consumption — CLI Skill

Table of Contents

storage.azure.com

az login

az rest

--resource

curl

curl

az rest

sqlcmd

az rest

az rest

nvarchar

datetime

money

DISTRIBUTION = ROUND_ROBIN

queryinsights.*

sys.tables

sys.columns

sys.views

sys.stats

Tool Stack

sqlcmd

DefaultAzureCredential

winget install sqlcmd

brew install sqlcmd

apt-get install sqlcmd

az

az login

jq

az rest

Agent check — verify before first SQL operation:

sqlcmd --version 2>/dev/null || echo "INSTALL: winget install sqlcmd OR brew install sqlcmd"

Connection

Discover the SQL Endpoint FQDN

Per COMMON-CLI.md Discovering Connection Parameters via REST:

WS_ID="<workspaceId>"
ITEM_ID="<warehouseOrLakehouseId>"

# Warehouse
az rest --method get \
  --resource "https://api.fabric.microsoft.com" \
  --url "https://api.fabric.microsoft.com/v1/workspaces/$WS_ID/warehouses/$ITEM_ID" \
  --query "properties.connectionString" --output tsv

# Lakehouse SQL endpoint
az rest --method get \
  --resource "https://api.fabric.microsoft.com" \
  --url "https://api.fabric.microsoft.com/v1/workspaces/$WS_ID/lakehouses/$ITEM_ID" \
  --query "properties.sqlEndpointProperties.connectionString" --output tsv

Result:

<uniqueId>.datawarehouse.fabric.microsoft.com

Connect with sqlcmd (Go)

# Interactive session (Entra login via browser if needed)
sqlcmd -S "<endpoint>.datawarehouse.fabric.microsoft.com" -d "<DatabaseName>" -G

# Non-interactive one-shot query
sqlcmd -S "<endpoint>.datawarehouse.fabric.microsoft.com" -d "<DatabaseName>" -G \
  -Q "SELECT TOP 10 * FROM dbo.FactSales"

# Explicit ActiveDirectoryDefault (uses az login session)
sqlcmd -S "<endpoint>.datawarehouse.fabric.microsoft.com" -d "<DatabaseName>" \
  --authentication-method ActiveDirectoryDefault \
  -Q "SELECT TOP 10 * FROM dbo.FactSales"

# Service principal (CI/CD)
SQLCMDPASSWORD="<clientSecret>" \
sqlcmd -S "<endpoint>.datawarehouse.fabric.microsoft.com" -d "<DatabaseName>" \
  --authentication-method ActiveDirectoryServicePrincipal \
  -U "<appId>" \
  -Q "SELECT COUNT(*) FROM dbo.FactSales"

Reusable Connection Variables

# Set once at script top
FABRIC_SERVER="<endpoint>.datawarehouse.fabric.microsoft.com"
FABRIC_DB="<DatabaseName>"
SQLCMD="sqlcmd -S $FABRIC_SERVER -d $FABRIC_DB -G"

# Use throughout
$SQLCMD -Q "SELECT TOP 5 * FROM dbo.DimProduct"
$SQLCMD -i myscript.sql

PowerShell / Windows CMD

# PowerShell
$s = "<endpoint>.datawarehouse.fabric.microsoft.com"; $db = "<DatabaseName>"
sqlcmd -S $s -d $db -G -Q "SELECT TOP 10 * FROM dbo.FactSales"
# CMD: use set S=... and %S% / %DB% instead of $variables

Agentic Exploration ("Chat With My Data")

Schema Discovery Sequence

Run these in order to understand what's in the endpoint. See references/discovery-queries.md for extended discovery queries.

# 1. List schemas
$SQLCMD -Q "SELECT schema_name FROM information_schema.schemata ORDER BY schema_name" -W

# 2. List tables and views
$SQLCMD -Q "SELECT table_schema, table_name, table_type FROM information_schema.tables ORDER BY table_schema, table_name" -W

# 3. Columns for a table
$SQLCMD -Q "SELECT column_name, data_type, character_maximum_length, is_nullable FROM information_schema.columns WHERE table_schema='dbo' AND table_name='FactSales' ORDER BY ordinal_position" -W

# 4. Preview rows
$SQLCMD -Q "SELECT TOP 5 * FROM dbo.FactSales" -W

# 5. Row counts
$SQLCMD -Q "SELECT s.name AS [schema], t.name AS [table], SUM(p.rows) AS row_count FROM sys.tables t JOIN sys.schemas s ON t.schema_id=s.schema_id JOIN sys.partitions p ON t.object_id=p.object_id AND p.index_id IN (0,1) GROUP BY s.name, t.name ORDER BY row_count DESC" -W

# 6. Programmability objects (views, functions, procedures)
$SQLCMD -Q "SELECT name, type_desc FROM sys.objects WHERE type IN ('V','FN','IF','P','TF') ORDER BY type_desc, name" -W

Agentic Workflow

1. Discover → Run Steps 1–3 to understand available tables/columns.
2. Sample →

   SELECT TOP 5

   on relevant tables.
3. Formulate → Write T-SQL using SQLDW-CONSUMPTION-CORE.md Supported T-SQL Surface Area.
4. Execute →

   $SQLCMD -Q "..."

   .
5. Iterate → Refine based on results.
6. Present → Show results or generate a reusable script (Script Generation section).

Gotchas, Rules, Troubleshooting

For full T-SQL/platform gotchas: SQLDW-CONSUMPTION-CORE.md Gotchas and Troubleshooting Reference and COMMON-CLI.md Gotchas & Troubleshooting (CLI-Specific).

MUST DO

• Always

  -d <DatabaseName>

  — FQDN alone is insufficient.
• Always

  -G

  or

  --authentication-method

  — SQL auth not supported on Fabric.

• az login

  first —

  ActiveDirectoryDefault

  uses az session. No session → cryptic failure.

• SET NOCOUNT ON;

  in scripts — suppresses row-count messages that corrupt output.
• Label queries with

  OPTION (LABEL = 'AGENTCLI_...')

  for Query Insights tracing.

AVOID

• ODBC sqlcmd (

  /opt/mssql-tools/bin/sqlcmd

  ) — requires ODBC driver. Use Go version.
• Omitting

  -W

  in scripts — trailing spaces corrupt CSV.
• DML on SQLEP — Lakehouse/Mirrored DB endpoints are read-only. DML only on Warehouse.
• MARS — not supported. Remove

  MultipleActiveResultSets

  from connection strings.
• Hardcoded FQDNs — discover via REST API (Discover the SQL Endpoint FQDN).

PREFER

• sqlcmd (Go) -G

  over curl+token for SQL queries.

• -Q

  (non-interactive exit) for agentic use.
• Piped input for multi-statement batches or queries with quotes.

• -i file.sql

  for complex queries — avoids shell escaping.

• -F vertical

  for exploration of wide tables.
• Env vars (

  FABRIC_SERVER

  ,

  FABRIC_DB

  ) for script reuse.

• az rest

  for Fabric REST API — use sqlcmd only for T-SQL.

TROUBLESHOOTING

Login failed for user '<token-identified principal>'

-d

Cannot open server

Login timeout expired

nc -zv <endpoint> 1433

ActiveDirectoryDefault

az login

az login --tenant <tenantId>

-W

-s

-W -s"," -w 4000

(N rows affected)

SET NOCOUNT ON

SET NOCOUNT ON;

Invalid object name 'queryinsights...'

USER_NAME()

sqlcmd

winget install sqlcmd

brew install sqlcmd