Reference

Core Builders and Predicates

The root package stays focused on SQL composition: builders, identifiers, predicates, raw fragments, and dialect policy.

Builders

Builder	Use it for	Notes
`qq.Select(...)`	Render SELECT queries.	Supports joins, grouping, having, ordering, pagination, prefixes, and suffixes.
`qq.InsertInto(...)`	Render INSERT queries.	Supports multi-row values, maps, and RETURNING where the dialect allows it.
`qq.Update(...)`	Render UPDATE queries.	Supports Set, SetMap, SetIf, SetOptional, WHERE, and RETURNING.
`qq.DeleteFrom(...)`	Render DELETE queries.	Supports WHERE, prefixes, suffixes, and RETURNING where supported.

Use quarry.T, quarry.C, and the identifier helpers page when you want Quarry to quote identifiers safely.

users := quarry.T("users").As("u")
q := qq.Select(users.Col("id"), users.Col("email")).
    From(users)

Eq, Neq, Gt, Gte, Lt, and Lte.

In, NotIn, TupleIn, and Any.

And, Or, and Not compose nested boolean logic.

Exists and NotExists wrap subqueries safely.

Nil and invalid builders return errors from ToSQL.
Unsupported dialect features, placeholder mismatches, and builder-state failures are documented in the errors reference page.
The implementation uses wrapped sentinels so tests can rely on errors.Is.