diff --git a/src/Custom.php b/src/Custom.php
index c5b4352..78ef255 100644
--- a/src/Custom.php
+++ b/src/Custom.php
@@ -10,6 +10,7 @@ namespace BitBadger\PDODocument;
 
 use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\Mapper\Mapper;
+use BitBadger\PDODocument\Mapper\StringMapper;
 use PDO;
 use PDOException;
 use PDOStatement;
@@ -93,7 +94,42 @@ class Custom
     }
 
     /**
-     * Execute a query that returns one or no results (returns false if not found)
+     * Execute a query that returns a JSON string of results
+     *
+     * @param string $query The query to be executed
+     * @param array<string, mixed> $parameters Parameters to use in executing the query
+     * @return string A JSON array with the results (empty results will be `[]`)
+     * @throws DocumentException If any is encountered
+     */
+    public static function jsonArray(string $query, array $parameters): string
+    {
+        return '[' . implode(',', self::array($query, $parameters, new StringMapper('data'))) . ']';
+    }
+
+    /**
+     * Execute a query, echoing the results to the output
+     *
+     * @param string $query The query to be executed
+     * @param array<string, mixed> $parameters Parameters to use in executing the query
+     * @throws DocumentException If any is encountered
+     */
+    public static function outputJsonArray(string $query, array $parameters): void
+    {
+        $isFirst = true;
+        echo '[';
+        foreach (self::list($query, $parameters, new StringMapper('data'))->items as $doc) {
+            if ($isFirst) {
+                $isFirst = false;
+            } else {
+                echo ',';
+            }
+            echo $doc;
+        }
+        echo ']';
+    }
+
+    /**
+     * Execute a query that returns one or no results
      *
      * @template TDoc The domain type of the document to retrieve
      * @param string $query The query to be executed (will have "LIMIT 1" appended)
@@ -112,6 +148,19 @@ class Custom
         }
     }
 
+    /**
+     * Execute a query that returns one or no JSON results
+     *
+     * @param string $query The query to be executed (will have "LIMIT 1" appended)
+     * @param array<string, mixed> $parameters Parameters to use in executing the query
+     * @return string The JSON document (returns `{}` if no document is found)
+     * @throws DocumentException If any is encountered
+     */
+    public static function jsonSingle(string $query, array $parameters): string
+    {
+        return self::single($query, $parameters, new StringMapper('data'))->getOrDefault('{}');
+    }
+
     /**
      * Execute a query that does not return a value
      *
diff --git a/src/Find.php b/src/Find.php
index 257662d..430b45a 100644
--- a/src/Find.php
+++ b/src/Find.php
@@ -12,7 +12,7 @@ use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\Mapper\DocumentMapper;
 
 /**
- * Functions to find documents
+ * Functions to retrieve documents as domain objects
  */
 class Find
 {
diff --git a/src/Json.php b/src/Json.php
new file mode 100644
index 0000000..e7b9e0f
--- /dev/null
+++ b/src/Json.php
@@ -0,0 +1,244 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+namespace BitBadger\PDODocument;
+
+/**
+ * Functions to retrieve and output documents as JSON
+ */
+class Json
+{
+    /**
+     * Retrieve all JSON documents in the given table
+     *
+     * @param string $tableName The table from which documents should be retrieved
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string A JSON array of all documents from the table
+     * @throws DocumentException If any is encountered
+     */
+    public static function all(string $tableName, array $orderBy = []): string
+    {
+        return Custom::jsonArray(Query::selectFromTable($tableName) . Query::orderBy($orderBy), []);
+    }
+
+    /**
+     * Retrieve a JSON document by its ID
+     *
+     * @param string $tableName The table from which the document should be retrieved
+     * @param mixed $docId The ID of the document to retrieve
+     * @return string The JSON document if found, `{}` otherwise
+     * @throws DocumentException If any is encountered
+     */
+    public static function byId(string $tableName, mixed $docId): string
+    {
+        return Custom::jsonSingle(Query\Find::byId($tableName, $docId), Parameters::id($docId));
+    }
+
+    /**
+     * Retrieve JSON documents via a comparison on JSON fields
+     *
+     * @param string $tableName The table from which documents should be retrieved
+     * @param Field[] $fields The field comparison to match
+     * @param FieldMatch|null $match How to handle multiple conditions (optional; defaults to All)
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string A JSON array of documents matching the given field comparison
+     * @throws DocumentException If any is encountered
+     */
+    public static function byFields(string $tableName, array $fields, ?FieldMatch $match = null,
+                                    array $orderBy = []): string
+    {
+        Parameters::nameFields($fields);
+        return Custom::jsonArray(Query\Find::byFields($tableName, $fields, $match) . Query::orderBy($orderBy),
+            Parameters::addFields($fields, []));
+    }
+
+    /**
+     * Retrieve JSON documents via a JSON containment query (`@>`; PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param mixed[]|object $criteria The criteria for the JSON containment query
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string A JSON array of documents matching the JSON containment query
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function byContains(string $tableName, array|object $criteria, array $orderBy = []): string
+    {
+        return Custom::jsonArray(Query\Find::byContains($tableName) . Query::orderBy($orderBy),
+            Parameters::json(':criteria', $criteria));
+    }
+
+    /**
+     * Retrieve JSON documents via a JSON Path match query (`@?`; PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param string $path The JSON Path match string
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string A JSON array of documents matching the JSON Path
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function byJsonPath(string $tableName, string $path, array $orderBy = []): string
+    {
+        return Custom::jsonArray(Query\Find::byJsonPath($tableName) . Query::orderBy($orderBy), [':path' => $path]);
+    }
+
+    /**
+     * Retrieve JSON documents via a comparison on JSON fields, returning only the first result
+     *
+     * @param string $tableName The table from which the document should be retrieved
+     * @param Field[] $fields The field comparison to match
+     * @param FieldMatch|null $match How to handle multiple conditions (optional; defaults to All)
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string The first JSON document if any matches are found, `{}` otherwise
+     * @throws DocumentException If any is encountered
+     */
+    public static function firstByFields(string $tableName, array $fields, ?FieldMatch $match = null,
+                                         array $orderBy = []): string
+    {
+        Parameters::nameFields($fields);
+        return Custom::jsonSingle(Query\Find::byFields($tableName, $fields, $match) . Query::orderBy($orderBy),
+            Parameters::addFields($fields, []));
+    }
+
+    /**
+     * Retrieve JSON documents via a JSON containment query (`@>`), returning only the first result (PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param mixed[]|object $criteria The criteria for the JSON containment query
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string The first JSON document if any matches are found, `{}` otherwise
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function firstByContains(string $tableName, array|object $criteria, array $orderBy = []): string
+    {
+        return Custom::jsonSingle(Query\Find::byContains($tableName) . Query::orderBy($orderBy),
+            Parameters::json(':criteria', $criteria));
+    }
+
+    /**
+     * Retrieve JSON documents via a JSON Path match query (`@?`), returning only the first result (PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param string $path The JSON Path match string
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @return string The first JSON document if any matches are found, `{}` otherwise
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function firstByJsonPath(string $tableName, string $path, array $orderBy = []): string
+    {
+        return Custom::jsonSingle(Query\Find::byJsonPath($tableName) . Query::orderBy($orderBy), [':path' => $path]);
+    }
+
+    /**
+     * Output all JSON documents in the given table
+     *
+     * @param string $tableName The table from which documents should be retrieved
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If any is encountered
+     */
+    public static function outputAll(string $tableName, array $orderBy = []): void
+    {
+        Custom::outputJsonArray(Query::selectFromTable($tableName) . Query::orderBy($orderBy), []);
+    }
+
+    /**
+     * Output a JSON document by its ID
+     *
+     * @param string $tableName The table from which the document should be retrieved
+     * @param mixed $docId The ID of the document to retrieve
+     * @throws DocumentException If any is encountered
+     */
+    public static function outputById(string $tableName, mixed $docId): void
+    {
+        echo self::byId($tableName, $docId);
+    }
+
+    /**
+     * Output JSON documents via a comparison on JSON fields
+     *
+     * @param string $tableName The table from which documents should be retrieved
+     * @param Field[] $fields The field comparison to match
+     * @param FieldMatch|null $match How to handle multiple conditions (optional; defaults to All)
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If any is encountered
+     */
+    public static function outputByFields(string $tableName, array $fields, ?FieldMatch $match = null,
+                                          array $orderBy = []): void
+    {
+        Parameters::nameFields($fields);
+        Custom::outputJsonArray(Query\Find::byFields($tableName, $fields, $match) . Query::orderBy($orderBy),
+            Parameters::addFields($fields, []));
+    }
+
+    /**
+     * Output JSON documents via a JSON containment query (`@>`; PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param mixed[]|object $criteria The criteria for the JSON containment query
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function outputByContains(string $tableName, array|object $criteria, array $orderBy = []): void
+    {
+        Custom::outputJsonArray(Query\Find::byContains($tableName) . Query::orderBy($orderBy),
+            Parameters::json(':criteria', $criteria));
+    }
+
+    /**
+     * Output JSON documents via a JSON Path match query (`@?`; PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param string $path The JSON Path match string
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function outputByJsonPath(string $tableName, string $path, array $orderBy = []): void
+    {
+        Custom::outputJsonArray(Query\Find::byJsonPath($tableName) . Query::orderBy($orderBy), [':path' => $path]);
+    }
+
+    /**
+     * Output JSON documents via a comparison on JSON fields, returning only the first result
+     *
+     * @param string $tableName The table from which the document should be retrieved
+     * @param Field[] $fields The field comparison to match
+     * @param FieldMatch|null $match How to handle multiple conditions (optional; defaults to All)
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If any is encountered
+     */
+    public static function outputFirstByFields(string $tableName, array $fields, ?FieldMatch $match = null,
+                                               array $orderBy = []): void
+    {
+        echo self::firstByFields($tableName, $fields, $match, $orderBy);
+    }
+
+    /**
+     * Output JSON documents via a JSON containment query (`@>`), returning only the first result (PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param mixed[]|object $criteria The criteria for the JSON containment query
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function outputFirstByContains(string $tableName, array|object $criteria, array $orderBy = []): void
+    {
+        echo self::firstByContains($tableName, $criteria, $orderBy);
+    }
+
+    /**
+     * Output JSON documents via a JSON Path match query (`@?`), returning only the first result (PostgreSQL only)
+     *
+     * @param string $tableName The name of the table from which documents should be retrieved
+     * @param string $path The JSON Path match string
+     * @param Field[] $orderBy Fields by which the results should be ordered (optional, default no ordering)
+     * @throws DocumentException If the database mode is not PostgreSQL, or if an error occurs
+     */
+    public static function outputFirstByJsonPath(string $tableName, string $path, array $orderBy = []): void
+    {
+        echo self::firstByJsonPath($tableName, $path, $orderBy);
+    }
+}
diff --git a/tests/Integration/PostgreSQL/CustomTest.php b/tests/Integration/PostgreSQL/CustomTest.php
index 6ddd09f..2660616 100644
--- a/tests/Integration/PostgreSQL/CustomTest.php
+++ b/tests/Integration/PostgreSQL/CustomTest.php
@@ -65,6 +65,36 @@ describe('::array()', function () {
     });
 });
 
+describe('::jsonArray()', function () {
+    test('returns non-empty array when data found', function () {
+        expect(Custom::jsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'sub' IS NOT NULL", []))
+            ->toContain('[{', '},{', '}]');
+    });
+    test('returns empty array when no data found', function () {
+        expect(Custom::jsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'nothing' = '7'", []))
+            ->toBe('[]');
+    });
+});
+
+describe('::outputJsonArray()', function () {
+    test('outputs non-empty array when data found', function () {
+        ob_clean();
+        ob_start();
+        Custom::outputJsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'sub' IS NOT NULL", []);
+        $json = ob_get_contents();
+        ob_end_clean();
+        expect($json)->toContain('[{', '},{', '}]');
+    });
+    test('outputs empty array when no data found', function () {
+        ob_clean();
+        ob_start();
+        Custom::outputJsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'nothing' = '7'", []);
+        $json = ob_get_contents();
+        ob_end_clean();
+        expect($json)->toBe('[]');
+    });
+});
+
 describe('::single()', function () {
     test('returns a document when one is found', function () {
         $doc = Custom::single('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id", [':id' => 'one'],
@@ -78,6 +108,19 @@ describe('::single()', function () {
     });
 });
 
+describe('::jsonSingle()', function () {
+    test('returns a document when one is found', function () {
+        expect(Custom::jsonSingle('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id",
+                [':id' => 'one']))
+            ->toStartWith('{"id":')->toContain('"one",')->toEndWith('}');
+    });
+    test('returns no document when one is not found', function () {
+        expect(Custom::jsonSingle('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id",
+                [':id' => 'eighty']))
+            ->toBe('{}');
+    });
+});
+
 describe('::nonQuery()', function () {
     test('works when documents match the WHERE clause', function () {
         Custom::nonQuery('DELETE FROM ' . ThrowawayDb::TABLE, []);
diff --git a/tests/Integration/PostgreSQL/JsonTest.php b/tests/Integration/PostgreSQL/JsonTest.php
new file mode 100644
index 0000000..29e338f
--- /dev/null
+++ b/tests/Integration/PostgreSQL/JsonTest.php
@@ -0,0 +1,219 @@
+<?php
+/**
+ * @author Daniel J. Summers <daniel@bitbadger.solutions>
+ * @license MIT
+ */
+
+declare(strict_types=1);
+
+use BitBadger\PDODocument\{Custom, Delete, Document, Field, FieldMatch, Json};
+use Test\Integration\{ArrayDocument, NumDocument, TestDocument};
+use Test\Integration\PostgreSQL\ThrowawayDb;
+
+pest()->group('integration', 'postgresql');
+
+/**
+ * Expect document ordering by verifying the index of IDs against others
+ *
+ * @param string $json The JSON string to be searched
+ * @param array $ids The IDs to be verified
+ */
+function expect_doc_order(string $json, array $ids): void
+{
+    for ($idx = 0; $idx < sizeof($ids) - 1; $idx++) {
+        expect(strpos($json, '"' . $ids[$idx] . '",'))
+            ->toBeLessThan(strpos($json, '"' . $ids[$idx + 1] . '",'),
+                "ID $ids[$idx] should have occurred before ID {$ids[$idx + 1]} in JSON $json");
+    }
+}
+
+describe('::all()', function () {
+    test('retrieves data', function () {
+        expect(Json::all(ThrowawayDb::TABLE))
+            ->toContain('{"id": "one",')
+            ->toContain('{"id": "two",')
+            ->toContain('{"id": "three",')
+            ->toContain('{"id": "four",')
+            ->toContain('{"id": "five",');
+    });
+    test('sorts data ascending', function () {
+        expect_doc_order(Json::all(ThrowawayDb::TABLE, [Field::named('id')]), ['five', 'four', 'one', 'three', 'two']);
+    });
+    test('sorts data descending', function () {
+        expect_doc_order(Json::all(ThrowawayDb::TABLE, [Field::named('id DESC')]),
+            ['two', 'three', 'one', 'four', 'five']);
+    });
+    test('sorts data numerically', function () {
+        expect_doc_order(
+            Json::all(ThrowawayDb::TABLE, [Field::named('sub.foo NULLS LAST'), Field::named('n:num_value')]),
+            ['two', 'four', 'one', 'three', 'five']);
+    });
+    test('retrieves empty results', function () {
+        Custom::nonQuery('DELETE FROM ' . ThrowawayDb::TABLE, []);
+        expect(Json::all(ThrowawayDb::TABLE))->toBe('[]');
+    });
+});
+
+describe('::byId()', function () {
+    test('retrieves a document via string ID', function () {
+        expect(Json::byId(ThrowawayDb::TABLE, 'two'))->toStartWith('{')->toContain('"id": "two",')->toEndWith('}');
+    });
+    test('retrieves a document via numeric ID', function () {
+        Delete::byFields(ThrowawayDb::TABLE, [Field::notExists('absent')]);
+        Document::insert(ThrowawayDb::TABLE, ['id' => 18, 'value' => 'howdy']);
+        expect(Json::byId(ThrowawayDb::TABLE, 18))->toStartWith('{')->toContain('"id": 18,')->toEndWith('}');
+    });
+    test('returns "{}" when a document is not found', function () {
+        expect(Json::byId(ThrowawayDb::TABLE, 'seventy-five'))->toBe('{}');
+    });
+});
+
+//describe('::byFields()', function () {
+//    test('retrieves matching documents', function () {
+//        $docs = Find::byFields(ThrowawayDb::TABLE, [Field::in('value', ['blue', 'purple']), Field::exists('sub')],
+//            TestDocument::class, FieldMatch::All);
+//        expect($docs)->not->toBeNull();
+//        $count = 0;
+//        foreach ($docs->items as $ignored) $count++;
+//        expect($count)->toBe(1);
+//    });
+//    test('retrieves ordered matching documents', function () {
+//        $docs = Find::byFields(ThrowawayDb::TABLE, [Field::equal('value', 'purple')], TestDocument::class,
+//            FieldMatch::All, [Field::named('id')]);
+//        expect($docs)->not->toBeNull()
+//            ->and(iterator_to_array($docs->map(fn ($it) => $it->id), false))->toBe(['five', 'four']);
+//    });
+//    test('retrieves documents matching a numeric IN clause', function () {
+//        $docs = Find::byFields(ThrowawayDb::TABLE, [Field::in('num_value', [2, 4, 6, 8])], TestDocument::class);
+//        expect($docs)->not->toBeNull();
+//        $count = 0;
+//        foreach ($docs->items as $ignored) $count++;
+//        expect($count)->toBe(1);
+//    });
+//    test('returns an empty list when no matching documents are found', function () {
+//        expect(Find::byFields(ThrowawayDb::TABLE, [Field::greater('num_value', 100)], TestDocument::class))
+//            ->not->toBeNull()
+//            ->hasItems->toBeFalse();
+//    });
+//    test('retrieves documents matching an inArray condition', function () {
+//        Delete::byFields(ThrowawayDb::TABLE, [Field::notExists('absentField')]);
+//        foreach (ArrayDocument::testDocuments() as $doc) Document::insert(ThrowawayDb::TABLE, $doc);
+//        $docs = Find::byFields(ThrowawayDb::TABLE, [Field::inArray('values', ThrowawayDb::TABLE, ['c'])],
+//            ArrayDocument::class);
+//        expect($docs)->not->toBeNull();
+//        $count = 0;
+//        foreach ($docs->items as $ignored) $count++;
+//        expect($count)->toBe(2);
+//    });
+//    test('returns an empty list when no documents match an inArray condition', function () {
+//        Delete::byFields(ThrowawayDb::TABLE, [Field::notExists('absentField')]);
+//        foreach (ArrayDocument::testDocuments() as $doc) Document::insert(ThrowawayDb::TABLE, $doc);
+//        expect(Find::byFields(ThrowawayDb::TABLE, [Field::inArray('values', ThrowawayDb::TABLE, ['j'])],
+//            ArrayDocument::class))
+//            ->not->toBeNull()
+//            ->hasItems->toBeFalse();
+//    });
+//});
+//
+//describe('::byContains()', function () {
+//    test('retrieves matching documents', function () {
+//        $docs = Find::byContains(ThrowawayDb::TABLE, ['value' => 'purple'], TestDocument::class);
+//        expect($docs)->not->toBeNull();
+//        $count = 0;
+//        foreach ($docs->items as $ignored) $count++;
+//        expect($count)->toBe(2);
+//    });
+//    test('retrieves ordered matching documents', function () {
+//        $docs = Find::byContains(ThrowawayDb::TABLE, ['sub' => ['foo' => 'green']], TestDocument::class,
+//            [Field::named('value')]);
+//        expect($docs)
+//            ->not->toBeNull()
+//            ->and(iterator_to_array($docs->map(fn ($it) => $it->id), false))->toBe(['two', 'four']);
+//    });
+//    test('returns an empty list when no documents match', function () {
+//        expect(Find::byContains(ThrowawayDb::TABLE, ['value' => 'indigo'], TestDocument::class))
+//            ->not->toBeNull()
+//            ->hasItems->toBeFalse();
+//    });
+//});
+//
+//describe('::byJsonPath()', function () {
+//    test('retrieves matching documents', function () {
+//        $docs = Find::byJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 10)', TestDocument::class);
+//        expect($docs)->not->toBeNull();
+//        $count = 0;
+//        foreach ($docs->items as $ignored) $count++;
+//        expect($count)->toBe(2);
+//    });
+//    test('retrieves ordered matching documents', function () {
+//        $docs = Find::byJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 10)', TestDocument::class,
+//            [Field::named('id')]);
+//        expect($docs)->not->toBeNull()
+//            ->and(iterator_to_array($docs->map(fn ($it) => $it->id), false))->toBe(['five', 'four']);
+//    });
+//    test('returns an empty list when no documents match', function () {
+//        expect(Find::byJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 100)', TestDocument::class))
+//            ->not->toBeNull()
+//            ->hasItems->toBeFalse();
+//    });
+//});
+//
+//describe('::firstByFields()', function () {
+//    test('retrieves a matching document', function () {
+//        $doc = Find::firstByFields(ThrowawayDb::TABLE, [Field::equal('value', 'another')], TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('two');
+//    });
+//    test('retrieves a document for multiple results', function () {
+//        $doc = Find::firstByFields(ThrowawayDb::TABLE, [Field::equal('sub.foo', 'green')], TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and(['two', 'four'])->toContain($doc->value->id);
+//    });
+//    test('retrieves a document for multiple ordered results', function () {
+//        $doc = Find::firstByFields(ThrowawayDb::TABLE, [Field::equal('sub.foo', 'green')], TestDocument::class,
+//            orderBy: [Field::named('n:num_value DESC')]);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('four');
+//    });
+//    test('returns None when no documents match', function () {
+//        expect(Find::firstByFields(ThrowawayDb::TABLE, [Field::equal('value', 'absent')], TestDocument::class))
+//            ->isNone->toBeTrue();
+//    });
+//});
+//
+//describe('::firstByContains()', function () {
+//    test('retrieves a matching document', function () {
+//        $doc = Find::firstByContains(ThrowawayDb::TABLE, ['value' => 'FIRST!'], TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('one');
+//    });
+//    test('retrieves a document for multiple results', function () {
+//        $doc = Find::firstByContains(ThrowawayDb::TABLE, ['value' => 'purple'], TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and(['four', 'five'])->toContain($doc->value->id);
+//    });
+//    test('retrieves a document for multiple ordered results', function () {
+//        $doc = Find::firstByContains(ThrowawayDb::TABLE, ['value' => 'purple'], TestDocument::class,
+//            [Field::named('sub.bar NULLS FIRST')]);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('five');
+//    });
+//    test('returns None when no documents match', function () {
+//        expect(Find::firstByContains(ThrowawayDb::TABLE, ['value' => 'indigo'], TestDocument::class))
+//            ->isNone->toBeTrue();
+//    });
+//});
+//
+//describe('::firstByJsonPath()', function () {
+//    test('retrieves a matching document', function () {
+//        $doc = Find::firstByJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ == 10)', TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('two');
+//    });
+//    test('retrieves a document for multiple results', function () {
+//        $doc = Find::firstByJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 10)', TestDocument::class);
+//        expect($doc)->isSome->toBeTrue()->and(['four', 'five'])->toContain($doc->value->id);
+//    });
+//    test('retrieves a document for multiple ordered results', function () {
+//        $doc = Find::firstByJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 10)', TestDocument::class,
+//            [Field::named('id DESC')]);
+//        expect($doc)->isSome->toBeTrue()->and($doc->value)->id->toBe('four');
+//    });
+//    test('returns None when no documents match', function () {
+//        expect(Find::firstByJsonPath(ThrowawayDb::TABLE, '$.num_value ? (@ > 100)', TestDocument::class))
+//            ->isNone->toBeTrue();
+//    });
+//});
diff --git a/tests/Integration/SQLite/CustomTest.php b/tests/Integration/SQLite/CustomTest.php
index 7e3de03..dd434cf 100644
--- a/tests/Integration/SQLite/CustomTest.php
+++ b/tests/Integration/SQLite/CustomTest.php
@@ -63,6 +63,36 @@ describe('::array()', function () {
     });
 });
 
+describe('::jsonArray()', function () {
+    test('returns non-empty array when data found', function () {
+        expect(Custom::jsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'sub' IS NOT NULL", []))
+            ->toContain('[{', '},{', '}]');
+    });
+    test('returns empty array when no data found', function () {
+        expect(Custom::jsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'nothing' = '7'", []))
+            ->toBe('[]');
+    });
+});
+
+describe('::outputJsonArray()', function () {
+    test('outputs non-empty array when data found', function () {
+        ob_clean();
+        ob_start();
+        Custom::outputJsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'sub' IS NOT NULL", []);
+        $json = ob_get_contents();
+        ob_end_clean();
+        expect($json)->toContain('[{', '},{', '}]');
+    });
+    test('outputs empty array when no data found', function () {
+        ob_clean();
+        ob_start();
+        Custom::outputJsonArray(Query::selectFromTable(ThrowawayDb::TABLE) . " WHERE data->>'nothing' = '7'", []);
+        $json = ob_get_contents();
+        ob_end_clean();
+        expect($json)->toBe('[]');
+    });
+});
+
 describe('::single()', function () {
     test('returns a document when one is found', function () {
         $doc = Custom::single('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id", [':id' => 'one'],
@@ -76,6 +106,19 @@ describe('::single()', function () {
     });
 });
 
+describe('::jsonSingle()', function () {
+    test('returns a document when one is found', function () {
+        expect(Custom::jsonSingle('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id",
+            [':id' => 'one']))
+            ->toStartWith('{"id":"one",')->toEndWith('}');
+    });
+    test('returns no document when one is not found', function () {
+        expect(Custom::jsonSingle('SELECT data FROM ' . ThrowawayDb::TABLE . " WHERE data->>'id' = :id",
+            [':id' => 'eighty']))
+            ->toBe('{}');
+    });
+});
+
 describe('::nonQuery()', function () {
     test('works when documents match the WHERE clause', function () {
         Custom::nonQuery('DELETE FROM ' . ThrowawayDb::TABLE, []);