books/backend/Books.Api/Database/Migrations/027_Attachments.sql

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-- 027_Attachments.sql
-- Creates attachment read model table for document/file storage
-- Used by AI Bookkeeper for uploaded invoices/receipts
CREATE TABLE IF NOT EXISTS attachment_read_models (
-- EventFlow standard columns
aggregate_id VARCHAR(255) PRIMARY KEY,
create_time TIMESTAMPTZ NOT NULL DEFAULT NOW(),
updated_time TIMESTAMPTZ NOT NULL DEFAULT NOW(),
last_aggregate_sequence_number INT NOT NULL DEFAULT 1,
-- Business columns
company_id VARCHAR(255) NOT NULL,
file_name VARCHAR(500) NOT NULL,
original_file_name VARCHAR(500) NOT NULL,
content_type VARCHAR(100) NOT NULL,
file_size BIGINT NOT NULL,
storage_path VARCHAR(1000) NOT NULL,
uploaded_by VARCHAR(255) NOT NULL,
uploaded_at TIMESTAMPTZ NOT NULL,
draft_id VARCHAR(255),
transaction_id VARCHAR(255),
retention_end_date TIMESTAMPTZ NOT NULL,
is_deleted BOOLEAN NOT NULL DEFAULT FALSE,
deleted_by VARCHAR(255),
delete_reason TEXT,
deleted_at TIMESTAMPTZ,
CONSTRAINT fk_attachment_company
FOREIGN KEY (company_id) REFERENCES company_read_models(aggregate_id) ON DELETE CASCADE
);
CREATE INDEX IF NOT EXISTS idx_attachment_company ON attachment_read_models(company_id);
CREATE INDEX IF NOT EXISTS idx_attachment_draft ON attachment_read_models(draft_id) WHERE draft_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_attachment_transaction ON attachment_read_models(transaction_id) WHERE transaction_id IS NOT NULL;
CREATE INDEX IF NOT EXISTS idx_attachment_not_deleted ON attachment_read_models(company_id, is_deleted) WHERE is_deleted = FALSE;