MSSQL

Execute SQL Server queries and export results as delimiter-separated text. Use when the user asks to fetch, insert, update, or manage data in Microsoft SQL Server, validate BI/reporting numbers, or prepare datasets for charts.

Run SQL Server queries using scripts/mssql_query.sh.

Quick start

1. Ensure credentials exist at: ~/.openclaw/credentials/mssql.env
2. Run a query: bash skills/mssql/scripts/mssql_query.sh --query "SELECT TOP 20 name FROM sys.tables"
3. Save to file: bash skills/mssql/scripts/mssql_query.sh --query "SELECT TOP 100 * FROM dbo.MyTable" --out /tmp/mytable.dsv

Credentials format

Expected env vars in ~/.openclaw/credentials/mssql.env:

• MSSQL_HOST
• MSSQL_DB
• MSSQL_USER
• MSSQL_PASSWORD
• Optional: MSSQL_PORT (default 1433), MSSQL_ENCRYPT (yes/no, default yes), MSSQL_TRUST_CERT (yes/no, default no), SQLCMD_BIN

The credential file path can be overridden with the MSSQL_ENV_FILE environment variable.

Permissions

Query permissions are controlled entirely at the SQL Server user level. The script does not impose any restrictions on query type — the database user's grants determine what is allowed.

Database reference map

Place your database map at references/DB_MAP.md inside this skill folder. This file tells the agent which databases, schemas, and tables to use and how they relate to each other.

See references/DB_MAP.example.md for the expected format.

Useful patterns

• Run long query from file: bash skills/mssql/scripts/mssql_query.sh --file /path/query.sql --out /tmp/out.dsv
• Override database: bash skills/mssql/scripts/mssql_query.sh --db OtherDB --query "SELECT TOP 10 * FROM dbo.Users"
• Change delimiter: bash skills/mssql/scripts/mssql_query.sh --query "SELECT ..." --delim ","
• Increase timeout: bash skills/mssql/scripts/mssql_query.sh --query "SELECT ..." --timeout 180

Output format

Output is delimiter-separated text, not RFC 4180 CSV. Fields are not quoted or escaped. This works well for structured numeric and short-text data. If your columns contain embedded delimiters, quotes, or newlines, the output may be malformed — choose a delimiter that does not appear in the data, or post-process the output.

Best practices

• Prefer explicit columns over SELECT *.
• Use TOP for exploratory samples.
• Keep queries scoped to the user request.
• Answer in business language by default; provide SQL details when requested.
• Never print or expose credentials in responses.

Troubleshooting

• sqlcmd not found -> install sqlcmd v18+ or set SQLCMD_BIN.
• TLS/certificate issues on internal networks -> set MSSQL_TRUST_CERT=yes in your credentials file. The default is no (certificate validation enabled).