renderAddIndex method
Implementation
@override
List<String> renderAddIndex(String tableName, IndexBlueprint index) {
final cols = index.columns.map((c) => '"$c"').join(', ');
String prefix = '';
if (index.type == ColumnIndex.unique) prefix = 'UNIQUE ';
return [
'CREATE ${prefix}INDEX IF NOT EXISTS "${index.name}" ON "$tableName" ($cols)',
];
}