compile method
Writes this expression's SQL, binding any values through parameters.
Implementation
@override
String compile(MssqlParameterAllocator parameters, MssqlDialect dialect) =>
'CAST(CASE WHEN ${negated ? 'NOT ' : ''}EXISTS '
'(${query.compileInto(parameters, dialect, nested: true)}) '
'THEN 1 ELSE 0 END AS bit)';