Sqldb Consumption Cli

> 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 Database Consumption — CLI Skill

Query SQL database in Fabric and its SQL analytics endpoint using sqlcmd and az rest. Supports interactive exploration, cross-database joins, vector / AI-RAG patterns, JSON, temporal queries, and security inspection.

> READ-ONLY SKILL — REFUSE WRITES. This is a consumption (read-only) skill. You MUST NOT execute any statement that modifies data or schema — INSERT, UPDATE, DELETE, MERGE, TRUNCATE, or any DDL (CREATE / ALTER / DROP). If the user asks to change data or schema, do not run it. Instead, tell the user this is a read-only skill and route the request to [sqldb-authoring-cli](../sqldb-authoring-cli/SKILL.md). Relying on database permissions is not sufficient — refuse the write at the skill level.

Table of Contents

| Topic | Reference | |---|---| | Finding Workspaces and Items in Fabric | [COMMON-CLI.md § Finding Workspaces and Items in Fabric](../../common/COMMON-CLI.md#finding-workspaces-and-items-in-fabric) — read first | | Authentication & token acquisition | [COMMON-CORE.md § Authentication](../../common/COMMON-CORE.md#authentication--token-acquisition) and [COMMON-CLI.md § Authentication Recipes](../../common/COMMON-CLI.md#authentication-recipes) | | SQL / TDS Data-Plane Access (sqlcmd) | [COMMON-CLI.md § SQL / TDS Data-Plane Access](../../common/COMMON-CLI.md#sql--tds-data-plane-access) | | CLI Gotchas (audience, escaping, expiry) | [COMMON-CLI.md § Gotchas & Troubleshooting](../../common/COMMON-CLI.md#gotchas--troubleshooting-cli-specific) | | Endpoint Selection (OLTP vs analytics) | [SQLDB-CONSUMPTION-CORE.md § Endpoint Selection](../../common/SQLDB-CONSUMPTION-CORE.md#endpoint-selection) — read first | | Supported T-SQL, Cross-DB, JSON, Vector/RAG, Metadata, Security, Best Practices, Gotchas, Quick Reference | [SQLDB-CONSUMPTION-CORE.md](../../common/SQLDB-CONSUMPTION-CORE.md) (all sections) | | Temporal Tables / Data Virtualization | [SQLDB-AUTHORING-CORE.md § Temporal](../../common/SQLDB-AUTHORING-CORE.md#temporal-tables-system-versioned), [§ Data Virtualization](../../common/SQLDB-AUTHORING-CORE.md#data-virtualization-external-tables-and-openrowset) | | Limitations Reference (mirroring, unsupported, resource limits) | [SQLDB-AUTHORING-CORE.md § Limitations Reference](../../common/SQLDB-AUTHORING-CORE.md#limitations-reference) | | Discovery Queries (schemas, tables, indexes, security, settings, sessions) | [references/discovery-queries.md](references/discovery-queries.md) | | Deep Performance Diagnostics | [sqldb-operations-cli](../sqldb-operations-cli/SKILL.md) |

For Fabric topology, capacity, OneLake, auth, control-plane REST, jobs see [COMMON-CORE.md](../../common/COMMON-CORE.md) and [COMMON-CLI.md](../../common/COMMON-CLI.md).

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Tool Stack

Prerequisites, installation, and CLI authentication/setup belong in [COMMON-CLI.md](../../common/COMMON-CLI.md). Use that guide before running the commands in this skill.

| Tool | Role | |---|---| | sqlcmd (Go) | Primary: Execute T-SQL queries. Standalone binary, no ODBC driver, built-in Entra ID auth via DefaultAzureCredential. | | az CLI | Use Fabric REST for endpoint discovery and related control-plane lookups referenced by this skill. | | jq | Parse JSON returned from az rest and related CLI output. |

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Connection

Discover the SQL Database Endpoint

For workspace/item resolution, endpoint discovery, and shared sqlcmd connection guidance, use:

• [COMMON-CLI.md](../../common/COMMON-CLI.md) for finding workspaces/items and resolving endpoint details
• [COMMON-CORE.md](../../common/COMMON-CORE.md) for shared CLI/auth/connection guidance

> Two endpoints exist — see [SQLDB-CONSUMPTION-CORE.md](../../common/SQLDB-CONSUMPTION-CORE.md) Endpoint Selection: > - SQL Database endpoint (OLTP): live transactional data, vector search, stored procedures. > - SQL Analytics Endpoint: replicated read-only data, cross-database queries, BI.

Connection guidance

For sqlcmd connection setup, authentication modes, connection-string patterns, and CI/CD auth examples, use the shared guidance in common/COMMON-CLI.md instead of copying setup templates into this skill.

For SQLDB-specific consumption in this skill, assume the connection inputs are already known:

• serverFqdn
• databaseName

# One-shot query against the discovered SQL database
sqlcmd  \
  -Q "SELECT TOP 10 * FROM dbo.Orders"

# Run a saved query file for sqldb exploration
sqlcmd  \
  -i my_query.sql

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Agentic Exploration ("Chat With My Data")

Schema Discovery Sequence

Run these in order to understand what's in the database. See [discovery-queries.md](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 with 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 s.name, t.name" -W

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

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

# 5. Constraints (PK, FK, UNIQUE, CHECK)
$SQLCMD -Q "SELECT tc.constraint_name, tc.constraint_type, kcu.column_name FROM information_schema.table_constraints tc JOIN information_schema.key_column_usage kcu ON tc.constraint_name=kcu.constraint_name WHERE tc.table_schema='dbo' AND tc.table_name='Orders' ORDER BY tc.constraint_type" -W

# 6. Indexes
$SQLCMD -Q "SELECT i.name, i.type_desc, STRING_AGG(c.name,', ') WITHIN GROUP (ORDER BY ic.key_ordinal) AS cols FROM sys.indexes i JOIN sys.index_columns ic ON i.object_id=ic.object_id AND i.index_id=ic.index_id JOIN sys.columns c ON ic.object_id=c.object_id AND ic.column_id=c.column_id WHERE i.object_id=OBJECT_ID('dbo.Orders') GROUP BY i.name, i.type_desc" -W

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

Agentic Workflow

1. Discover → Run Steps 1–7 to understand available tables/columns.
2. Sample → SELECT TOP 5 on relevant tables.
3. Formulate → Write T-SQL using [SQLDB-CONSUMPTION-CORE.md](../../common/SQLDB-CONSUMPTION-CORE.md) Supported T-SQL Surface Area. Most Azure SQL syntax is supported (temporal queries, JSON, data virtualization, IQP). Check AVOID section for exceptions (EXECUTE AS, CDC, Always Encrypted not available).
4. Execute → $SQLCMD -Q "...".
5. Iterate → Refine based on results.
6. Present → Show results or generate a reusable script.

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Gotchas, Rules, Troubleshooting

For full consumption gotchas: [SQLDB-CONSUMPTION-CORE.md](../../common/SQLDB-CONSUMPTION-CORE.md) Gotchas and Troubleshooting Reference. For CLI-specific issues: [COMMON-CLI.md](../../common/COMMON-CLI.md) Gotchas & Troubleshooting (CLI-Specific).

MUST DO

• Refuse all writes — this is a read-only skill. Never run INSERT / UPDATE / DELETE / MERGE / TRUNCATE or any DDL (CREATE / ALTER / DROP). Inform the user it is read-only and route write/schema requests to [sqldb-authoring-cli](../sqldb-authoring-cli/SKILL.md).
• Always -d — FQDN alone is insufficient.
• Always -G or --authentication-method — SQL auth not supported on Fabric.
• Follow [COMMON-CLI.md](../../common/COMMON-CLI.md) authentication guidance first — keep Microsoft Entra / CLI auth prerequisites centralized there instead of repeating az login steps here.
• Use SQL analytics endpoint for cross-database queries — three-part naming fails on the OLTP endpoint.
• Respect RLS — query as end-user identity to test row-level security policies.
• SET NOCOUNT ON; in scripts — suppresses row-count messages that corrupt output.

AVOID

• ODBC sqlcmd — use the Go version.
• Omitting -W in scripts — trailing spaces corrupt CSV.
• Heavy analytical queries on the OLTP endpoint — use the SQL analytics endpoint.
• DML on the SQL analytics endpoint — it is read-only.
• MARS / CREATE LOGIN / SQL auth / EXECUTE AS — not supported.
• CONTAINS / FREETEXT — full-text is preview only; use LIKE, CHARINDEX, or vector search.
• Assuming the SQL analytics endpoint mirrors everything — RLS/DDM/OLS, vector/json columns, computed columns, views, procedures, and functions are NOT propagated. See [Limitations Reference](../../common/SQLDB-AUTHORING-CORE.md#limitations-reference) and [Mirroring Considerations](../../common/SQLDB-AUTHORING-CORE.md#mirroring-considerations).
• Hardcoded FQDNs — discover via REST API.

PREFER

• sqlcmd (Go) -G over curl+token for SQL queries.
• -Q (non-interactive exit) for agentic use.
• SQL analytics endpoint for heavy aggregation and BI queries (avoids OLTP impact). Note: max 1000 tables mirrored; RLS/DDM/OLS not propagated; vector/json columns excluded.
• SQL database endpoint for vector search, stored procedures, temporal queries, and any data requiring security policy enforcement.
• Temporal queries (FOR SYSTEM_TIME AS OF) for point-in-time analysis and audit.
• OPENROWSET / external tables to query OneLake files without import.
• FOR JSON PATH to export results as JSON; OPENJSON to parse JSON columns.
• Copilot — use -- comments to guide code completion; use chat pane for NL-to-SQL.
• 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.

TROUBLESHOOTING

| Symptom | Cause | Fix | |---|---|---| | Login failed for user | Wrong DB name or no access | Verify -d matches the REST properties.databaseName value (see COMMON-CLI.md "Discovering Connection Parameters via REST"), and that you have permission | | Cannot open server | Wrong FQDN or network | Re-discover via REST API; check port 1433 | | Login timeout expired | Port 1433 blocked | nc -zv .database.fabric.microsoft.com 1433; check firewall/VPN | | ActiveDirectoryDefault failure | az login expired or wrong tenant | Re-authenticate using the Azure CLI troubleshooting/auth guidance in [COMMON-CLI.md](../../common/COMMON-CLI.md) | | Cross-database query fails | Using OLTP endpoint | Switch to SQL analytics endpoint for three-part naming | | Data appears stale in analytics endpoint | Mirroring replication lag | Wait for replication; check status via sys.dm_change_feed_log_scan_sessions | | Table missing from analytics endpoint | Table exceeds 1000-table mirror limit, or has unsupported PK type, or uses CCI/in-memory/Always Encrypted | Check sys.dm_change_feed_errors; see mirroring limitations | | Column missing from analytics endpoint | Computed column, or unsupported type (image, text, xml, sqlvariant, geometry, geography, hierarchyid, vector, json) | Query the OLTP endpoint for these columns | | LOB data truncated on analytics endpoint | LOB columns > 1 MB are truncated in OneLake | Query the OLTP endpoint for full LOB data | | datetime2(7) precision loss on analytics endpoint | Delta Lake supports only 6 digits of precision | 7th fractional digit is trimmed; use OLTP endpoint if precision is critical | | RLS/DDM not enforced on analytics endpoint | Security policies not propagated to OneLake | Query the OLTP endpoint to enforce security policies | | Vector search returns no results | NULL embeddings or dimension mismatch | Verify WHERE Embedding IS NOT NULL; check dimensions | | RLS not filtering as expected | Wrong security predicate or user context | Check USER_NAME() value; verify policy with sys.security_policies | | sys.fn_get_audit_file_v2 returns no rows | Auditing not enabled | Enable auditing via REST API (PATCH .../settings/sqlAudit) or Fabric portal | | Garbled CSV output | Missing -W or wrong -s | Add -W -s"," -w 4000 | | (N rows affected) in file | No SET NOCOUNT ON | Prepend SET NOCOUNT ON; | | sqlcmd not found | sqlcmd is not installed or not on PATH | See common/COMMON-CLI.md for sqlcmd installation and setup guidance | | Login timeout expired on redirect | Connection policy requires ports 11000–11999 | Allow outbound to Azure SQL IPs on ports 11000–11999 in addition to 1433 |

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: alifadl009
• Source: alifadl009/microsoft-fabric-claude-skill
• License: MIT

Install and usage instructions live in the source repository linked above.