Yii2 Query Builder

The Yii2 Query Builder tool provides a language-agnostic representation of a SQL query constructed via Yii2's QueryBuilder API. It accepts inputs such as operation type (select, insert, update, delete), target table, and column lists, then composes a parameterized SQL string with placeholders. It does not execute queries; it only builds the statement and a bound parameter map for safe execution in a Yii2 project.
Conceptually, the tool maps user-specified clauses to corresponding builder methods: add/compose select(), from(), where(), join(), groupBy(), having(), orderBy(), limit(), and offset(). It validates input types, ensures proper quoting for the chosen dialect, and emits a SQL template with named parameters. The output also includes a map of parameter values, enabling secure execution and easier testing.
Developers benefit from early validation, consistent SQL generation across modules, and an auditable recipe for complex queries. The tool supports common patterns such as unions, subqueries, and expressions, with guidance on best practices for performance, indexing, and parameter binding. It is particularly helpful for teams migrating legacy SQL into Yii2-driven codebases or prototyping queries before embedding them in ActiveQuery pipelines.