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allowed-tools: Bash, Read description: Create, alter, and validate Snowflake semantic views using Snowflake CLI (snow). Use when asked to build or troubleshoot semantic views/semantic layer definitions with CREATE/ALTER SEMANTIC VIEW, to validate semantic-view DDL against Snowflake via CLI, or to guide Snowflake CLI installation and connection setup.

Snowflake Semantic Views

One-Time Setup

• Verify Snowflake CLI installation by opening a new terminal and running snow --help.
• If Snowflake CLI is missing or the user cannot install it, direct them to https://docs.snowflake.com/en/developer-guide/snowflake-cli/installation/installation.
• Configure a Snowflake connection with snow connection add per https://docs.snowflake.com/en/developer-guide/snowflake-cli/connecting/configure-connections#add-a-connection.
• Use the configured connection for all validation and execution steps.

Workflow For Each Semantic View Request

1. Confirm the target database, schema, role, warehouse, and final semantic view name.
2. Confirm the model follows a star schema (facts with conformed dimensions).
3. Draft the semantic view DDL using the official syntax:
   • https://docs.snowflake.com/en/sql-reference/sql/create-semantic-view
4. Populate synonyms and comments for each dimension, fact, and metric:
   • Read Snowflake table/view/column comments first (preferred source):
     • https://docs.snowflake.com/en/sql-reference/sql/comment
   • If comments or synonyms are missing, ask whether you can create them, whether the user wants to provide text, or whether you should draft suggestions for approval.
5. Create a temporary validation name (for example, append __tmp_validate) while keeping the same database and schema.
6. Always validate by sending the DDL to Snowflake via Snowflake CLI before finalizing:
   • Use snow sql to execute the statement with the configured connection.
   • If flags differ by version, check snow sql --help and use the connection optio