Column Does Not Exist Error

Verify the columns in your table match your query.

-- PostgreSQL: describe table
\d table_name

-- Or query information_schema
SELECT column_name, data_type
FROM information_schema.columns
WHERE table_name = 'users'
ORDER BY ordinal_position;

-- MySQL
DESCRIBE users;

Unquoted identifiers in PostgreSQL are case-folded to lowercase.

-- ❌ Mixed case column
SELECT "UserId" FROM users;  -- Only works if column is literally "UserId"

-- ✅ Use lowercase (PostgreSQL folds unquoted names)
SELECT userid FROM users;

-- OR quote exactly
SELECT "UserId" FROM users;  -- Column must be defined as "UserId"

Ensure all database migrations have been applied.

# Prisma
npx prisma migrate deploy

# TypeORM
npx typeorm migration:run

# Sequelize
npx sequelize-cli db:migrate

# Knex
npx knex migrate:latest