Contents

• pg_chdb Development Tools
  • Data Type Table
  • Bear Configuration

pg_chdb Development Tools

This directory contains scripts and configurations to assist with the development of the chdb extensions.

• bear.json: Bear Configuration
• bear.yml: Bear Configuration
• README.md: This file
• type_table.awk: Data Type Table

Data Type Table

type_table.awk rewrites the inferred data type table in doc/chdb_hook.md from the table that pg-clickhouse-c generates out of its own regression test:

make type-table

pg-clickhouse-c maps a chDB type to a Postgres type in pgch_pg_type_for, which reports pseudo types for Map and Tuple that no Postgres column holds, so the filter swaps in the text declarations that CREATE TABLE writes instead, and renames the header columns to chDB and Postgres. Validated by make lint.

Bear Configuration

Configuration files for Bear, used to generate the compile_commands.json file:

make compile_commands.json

This file is used by the clang-tidy and lint targets to analyze the chdb extensions source code to report issues. The pg_chdb project enables all warnings and converts them to errors, but this configuration gives clang-tidy indigestion. We use the Bear configuration to disable all errors to avoid this issue.

There are currently two files:

• bear.yml works with Bear 4 and later, the current release
• bear.json works with Bear 3, which ships with Debian

The compile_commands.json target determines which to use.