spanner-sql

A “spanner-sql” tool executes a pre-defined SQL statement against a Google Cloud Spanner database.

About

A spanner-sql tool executes a pre-defined SQL statement (either googlesql or postgresql) against a Cloud Spanner database. It’s compatible with any of the following sources:

spanner

GoogleSQL

For the googlesql dialect, the specified SQL statement is executed as a data manipulation language (DML) statements, and specified parameters will inserted according to their name: e.g. @name.

Note: This tool uses parameterized queries to prevent SQL injections. Query parameters can be used as substitutes for arbitrary expressions. Parameters cannot be used as substitutes for identifiers, column names, table names, or other parts of the query.

PostgreSQL

For the postgresql dialect, the specified SQL statement is executed as a prepared statement, and specified parameters will inserted according to their position: e.g. $1 will be the first parameter specified, $@ will be the second parameter, and so on.

Note: This tool uses parameterized queries to prevent SQL injections. Query parameters can be used as substitutes for arbitrary expressions. Parameters cannot be used as substitutes for identifiers, column names, table names, or other parts of the query.

Example

tools:
 search_flights_by_number:
    kind: spanner-sql
    source: my-spanner-instance
    statement: |
      SELECT * FROM flights
      WHERE airline = @airline
      AND flight_number = @flight_number
      LIMIT 10
    description: |
      Use this tool to get information for a specific flight.
      Takes an airline code and flight number and returns info on the flight.
      Do NOT use this tool with a flight id. Do NOT guess an airline code or flight number.
      A airline code is a code for an airline service consisting of two-character
      airline designator and followed by flight number, which is 1 to 4 digit number.
      For example, if given CY 0123, the airline is "CY", and flight_number is "123".
      Another example for this is DL 1234, the airline is "DL", and flight_number is "1234".
      If the tool returns more than one option choose the date closes to today.
      Example:
      {{
          "airline": "CY",
          "flight_number": "888",
      }}
      Example:
      {{
          "airline": "DL",
          "flight_number": "1234",
      }}
    parameters:
      - name: airline
        type: string
        description: Airline unique 2 letter identifier
      - name: flight_number
        type: string
        description: 1 to 4 digit number

tools:
 search_flights_by_number:
    kind: spanner
    source: my-spanner-instance
    statement: |
      SELECT * FROM flights
      WHERE airline = $1
      AND flight_number = $2
      LIMIT 10
    description: |
      Use this tool to get information for a specific flight.
      Takes an airline code and flight number and returns info on the flight.
      Do NOT use this tool with a flight id. Do NOT guess an airline code or flight number.
      A airline code is a code for an airline service consisting of two-character
      airline designator and followed by flight number, which is 1 to 4 digit number.
      For example, if given CY 0123, the airline is "CY", and flight_number is "123".
      Another example for this is DL 1234, the airline is "DL", and flight_number is "1234".
      If the tool returns more than one option choose the date closes to today.
      Example:
      {{
          "airline": "CY",
          "flight_number": "888",
      }}
      Example:
      {{
          "airline": "DL",
          "flight_number": "1234",
      }}
    parameters:
      - name: airline
        type: string
        description: Airline unique 2 letter identifier
      - name: flight_number
        type: string
        description: 1 to 4 digit number

Reference

field	type	required	description
kind	string	true	Must be “spanner-sql”.
source	string	true	Name of the source the SQL should execute on.
description	string	true	Description of the tool that is passed to the LLM.
statement	string	true	SQL statement to execute on.
parameters	parameters	false	List of parameters that will be inserted into the SQL statement.
readOnly	bool	false	When set to `true`, the `statement` is run as a read-only transaction. Default: `false`.

Last modified May 28, 2025: docs: add note to tools (#608) (1bf6003e)