chore: import upstream snapshot with attribution

examples/eval-sql-validation/README.md

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+# eval-sql-validation (Sql Validation)
+
+You can run this example with:
+
+```bash
+npx promptfoo@latest init --example eval-sql-validation
+cd eval-sql-validation
+```
+
+## Usage
+
+To get started, set your OPENAI_API_KEY environment variable and `npm i node-sql-parser` to install the peer dependency.
+
+Next, edit promptfooconfig.yaml.
+
+Then run:
+
+```bash
+promptfoo eval
+```
+
+Afterwards, you can view the results by running `promptfoo view`

examples/eval-sql-validation/database.sql

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+CREATE DATABASE IF NOT EXISTS ShipmentSystem;
+
+USE ShipmentSystem;
+
+CREATE TABLE IF NOT EXISTS Products (
+    product_id INT AUTO_INCREMENT PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    description TEXT,
+    price DECIMAL(10, 2) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS Shipments (
+    shipment_id INT AUTO_INCREMENT PRIMARY KEY,
+    product_id INT NOT NULL,
+    quantity INT NOT NULL,
+    shipment_date DATE NOT NULL,
+    status VARCHAR(50) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (product_id) REFERENCES Products(product_id)
+);
+
+CREATE TABLE IF NOT EXISTS ShipmentDetails (
+    detail_id INT AUTO_INCREMENT PRIMARY KEY,
+    shipment_id INT NOT NULL,
+    location VARCHAR(255) NOT NULL,
+    status VARCHAR(50) NOT NULL,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (shipment_id) REFERENCES Shipments(shipment_id)
+);
+

examples/eval-sql-validation/promptfooconfig.yaml

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+# yaml-language-server: $schema=https://promptfoo.dev/config-schema.json
+description: 'Is-SQL example'
+
+prompts:
+  - |
+    Output a SQL query that returns the number of {{product}} sold in the last month.
+
+    Database schema:
+    {{database}}
+
+    Only output raw SQL code without markdown.
+
+providers:
+  - openai:gpt-4.1-mini
+  - openai:gpt-4o
+
+tests:
+  - vars:
+      product: bananas
+      database: file://database.sql
+
+    assert:
+      # Ensure output is a valid SQL query
+      - type: is-sql
+      - type: icontains
+        value: 'Select'
+
+  - vars:
+      product: apples
+      database: file://database.sql
+    assert:
+      # Ensure output is a valid SQL query
+      - type: is-sql
+        value:
+          databaseType: 'MySQL'
+          # Ensure only the following tables are used
+          allowedTables:
+            - select::null::Products
+            - select::null::Shipments
+
+  - vars:
+      product: oranges
+      database: file://database.sql
+    assert:
+      - type: is-sql
+        value:
+          databaseType: 'MySQL'
+          allowedColumns:
+            # We expect this test to fail no matter what
+            - select::null::DoesntExist