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70 lines
2.2 KiB
SQL
70 lines
2.2 KiB
SQL
-- noinspection SqlDialectInspectionForFile
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-- noinspection SqlNoDataSourceInspectionForFile
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-- noinspection SqlResolveForFile
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-- Comments that can be attached to just about anything.
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-- This is a polymorphic table and can apply to a wide variety of entities.
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CREATE TABLE comments (
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-- Not used for anything except replication.
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id BIGINT(20) NOT NULL AUTO_INCREMENT,
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-- Effective "primary key" (PUBLIC)
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token VARCHAR(32) NOT NULL,
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-- Idempotency token from client
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-- This is so the frontend client doesn't submit duplicate items.
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uuid_idempotency_token VARCHAR(36) NOT NULL,
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-- User making the comment
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user_token VARCHAR(32) NOT NULL,
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-- The type of entity the comment applies to
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entity_type VARCHAR(32) NOT NULL,
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-- The token of the entity the comment applies to
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entity_token VARCHAR(32) NOT NULL,
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-- The comment in markdown
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comment_markdown TEXT NOT NULL,
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-- Generated HTML (not user-editable).
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comment_rendered_html TEXT NOT NULL,
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-- For abuse tracking.
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-- Wide enough for IPv4/6
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creator_ip_address VARCHAR(40) NOT NULL,
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editor_ip_address VARCHAR(40) NOT NULL,
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-- ========== VECTOR CLOCK ==========
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-- Incremented with every update.
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version INT NOT NULL DEFAULT 0,
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-- ========== TIMESTAMPS ==========
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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-- Technically, this conveys *user* edits, not things that update the record itself.
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edited_at TIMESTAMP NULL,
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-- If this is removed by a mod.
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-- It completely disappears from the system.
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user_deleted_at TIMESTAMP NULL,
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mod_deleted_at TIMESTAMP NULL,
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-- The owner of the thing the comment is attached to can delete the comment too.
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object_owner_deleted_at TIMESTAMP NULL,
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-- INDICES --
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PRIMARY KEY (id),
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UNIQUE KEY (token),
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UNIQUE KEY (uuid_idempotency_token),
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KEY index_entity_type_entity_token (entity_type, entity_token),
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KEY index_user_token (user_token),
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KEY index_created_at (created_at),
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KEY index_user_deleted_at (user_deleted_at),
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KEY index_mod_deleted_at (mod_deleted_at),
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KEY index_object_owner_deleted_at (object_owner_deleted_at)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
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