data table sql files

scripts/init_user.sql

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+-- Create a new database
+CREATE DATABASE ai_conversations;
+
+-- Create a dedicated user (role) for your app
+CREATE USER myapp_user WITH PASSWORD 'secure_password_123';
+
+-- Grant privileges
+GRANT ALL PRIVILEGES ON DATABASE ai_conversations TO myapp_user;
+
+-- Also needed: allow user to create schemas/tables
+\c ai_conversations
+ALTER USER myapp_user CREATEDB;  -- optional but helpful during dev
+GRANT ALL ON SCHEMA public TO myapp_user;

scripts/recreate_table.sql

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+-- Drop the index first (if it exists)
+DROP INDEX IF EXISTS idx_messages_conversation;
+
+-- Drop the messages table (if it exists)
+DROP TABLE IF EXISTS messages;
+
+-- Recreate the messages table with TEXT conversation_id
+-- Note: UUID extension is no longer needed since conversation_id is TEXT
+CREATE TABLE messages (
+    id BIGSERIAL PRIMARY KEY,
+    conversation_id TEXT NOT NULL,
+    message_type VARCHAR(10) NOT NULL CHECK (message_type IN ('human', 'ai', 'tool')),
+    content TEXT NOT NULL,
+    sequence_number INTEGER NOT NULL CHECK (sequence_number >= 0),
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Recreate the index for fast retrieval of all messages in a conversation (in order)
+CREATE INDEX idx_messages_conversation ON messages (conversation_id, sequence_number);
+

scripts/table_schema.sql

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+-- Create the messages table
+CREATE TABLE IF NOT EXISTS messages (
+    id BIGSERIAL PRIMARY KEY,
+    conversation_id TEXT NOT NULL,
+    message_type VARCHAR(10) NOT NULL CHECK (message_type IN ('human', 'ai', 'tool')),
+    content TEXT NOT NULL,
+    sequence_number INTEGER NOT NULL CHECK (sequence_number >= 0),
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Index for fast retrieval of all messages in a conversation (in order)
+CREATE INDEX IF NOT EXISTS idx_messages_conversation ON messages (conversation_id, sequence_number);