SQL Parameter Converter

Rewrite ?, numbered, and generated named placeholders outside strings/comments and inspect the resulting query shape.

Target placeholder style

SQL

ReadyOnly placeholder tokens outside quoted strings and comments are rewritten.

Before running the SQL

The SQL layer keeps transformation, generation, and inspection in the browser. Existing /SQL engines remain intact while the new inspector adds statement, table/CTE, placeholder, clause, and bounded structural-warning context.

Parser and execution boundary

WebToolArc does not connect to a database or execute these statements. The shared scanner handles common lexical structures, quoted strings/identifiers, comments, parameters, and practical references, but it is not a vendor-complete grammar, schema validator, optimizer, lineage engine, or security review. Use a real database/parser when those guarantees matter.