Reference¶

Technical reference documentation for QuickETL.

Reference Guides¶

Guide	Description
Expressions	SQL expression syntax
Data Types	Type system and mapping
Environment Variables	Configuration variables
Troubleshooting	Common issues and solutions

Expression Language¶

QuickETL uses SQL-compatible expressions for filters, derived columns, and checks:

transforms:
  - op: filter
    predicate: amount > 100 AND status = 'active'

  - op: derive_column
    name: total
    expr: quantity * price * (1 - discount)

Expression Reference →

Data Types¶

Standard types that map across all backends:

Type	Description
`string`	Text data
`int`	Integer numbers
`float`	Floating-point
`bool`	Boolean
`date`	Calendar date
`timestamp`	Date and time
`decimal`	Precise decimal

Data Types Reference →

Environment Variables¶

Configure connections and credentials via environment:

export POSTGRES_HOST=localhost
export POSTGRES_USER=quicketl
export AWS_REGION=us-east-1

Environment Variables →

Troubleshooting¶

Common issues and solutions:

Installation problems
Configuration errors
Runtime failures
Performance issues

Troubleshooting Guide →