diff --git a/composer.json b/composer.json
index a4ae78a5..ebb1d42e 100644
--- a/composer.json
+++ b/composer.json
@@ -120,6 +120,7 @@
             "Carbon\\": "overrides/nesbot/carbon/src/Carbon/",
             "Illuminate\\Cache\\": "overrides/laravel/framework/src/Illuminate/Cache/",
             "Doctrine\\DBAL\\Driver\\": "overrides/doctrine/dbal/lib/Doctrine/DBAL/Driver/",
+            "Doctrine\\DBAL\\Schema\\": "overrides/doctrine/dbal/lib/Doctrine/DBAL/Schema/",
             "Symfony\\Component\\Finder\\Iterator\\": "overrides/symfony/finder/Iterator/",
             "Symfony\\Component\\Finder\\": "overrides/symfony/finder/",
             "Symfony\\Component\\Console\\Helper\\": "overrides/symfony/console/Helper/",
@@ -203,6 +204,7 @@
             "vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOQueryImplementation.php",
             "vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php",
             "vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatementImplementations.php",
+            "vendor/doctrine/dbal/lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php",
             "vendor/laravel/framework/src/Illuminate/Support/Carbon.php",
             "vendor/laravel/framework/src/Illuminate/Support/Str.php",
             "vendor/laravel/framework/src/Illuminate/Support/ViewErrorBag.php",
diff --git a/overrides/doctrine/dbal/lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php b/overrides/doctrine/dbal/lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php
new file mode 100644
index 00000000..16422f7a
--- /dev/null
+++ b/overrides/doctrine/dbal/lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php
@@ -0,0 +1,538 @@
+<?php
+
+namespace Doctrine\DBAL\Schema;
+
+use Doctrine\DBAL\Exception\DriverException;
+use Doctrine\DBAL\FetchMode;
+use Doctrine\DBAL\Platforms\PostgreSqlPlatform;
+use Doctrine\DBAL\Types\Type;
+use Doctrine\DBAL\Types\Types;
+
+use function array_change_key_case;
+use function array_filter;
+use function array_keys;
+use function array_map;
+use function array_shift;
+use function assert;
+use function explode;
+use function implode;
+use function in_array;
+use function preg_match;
+use function preg_replace;
+use function sprintf;
+use function str_replace;
+use function strlen;
+use function strpos;
+use function strtolower;
+use function trim;
+
+use const CASE_LOWER;
+
+/**
+ * PostgreSQL Schema Manager.
+ */
+class PostgreSqlSchemaManager extends AbstractSchemaManager
+{
+    /** @var string[] */
+    private $existingSchemaPaths;
+
+    /**
+     * Gets all the existing schema names.
+     *
+     * @return string[]
+     */
+    public function getSchemaNames()
+    {
+        $statement = $this->_conn->executeQuery(
+            "SELECT nspname FROM pg_namespace WHERE nspname !~ '^pg_.*' AND nspname != 'information_schema'"
+        );
+
+        return $statement->fetchAll(FetchMode::COLUMN);
+    }
+
+    /**
+     * Returns an array of schema search paths.
+     *
+     * This is a PostgreSQL only function.
+     *
+     * @return string[]
+     */
+    public function getSchemaSearchPaths()
+    {
+        $params = $this->_conn->getParams();
+
+        $searchPaths = $this->_conn->fetchColumn('SHOW search_path');
+        assert($searchPaths !== false);
+
+        $schema = explode(',', $searchPaths);
+
+        if (isset($params['user'])) {
+            $schema = str_replace('"$user"', $params['user'], $schema);
+        }
+
+        return array_map('trim', $schema);
+    }
+
+    /**
+     * Gets names of all existing schemas in the current users search path.
+     *
+     * This is a PostgreSQL only function.
+     *
+     * @return string[]
+     */
+    public function getExistingSchemaSearchPaths()
+    {
+        if ($this->existingSchemaPaths === null) {
+            $this->determineExistingSchemaSearchPaths();
+        }
+
+        return $this->existingSchemaPaths;
+    }
+
+    /**
+     * Sets or resets the order of the existing schemas in the current search path of the user.
+     *
+     * This is a PostgreSQL only function.
+     *
+     * @return void
+     */
+    public function determineExistingSchemaSearchPaths()
+    {
+        $names = $this->getSchemaNames();
+        $paths = $this->getSchemaSearchPaths();
+
+        $this->existingSchemaPaths = array_filter($paths, static function ($v) use ($names) {
+            return in_array($v, $names);
+        });
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function dropDatabase($database)
+    {
+        try {
+            parent::dropDatabase($database);
+        } catch (DriverException $exception) {
+            // If we have a SQLSTATE 55006, the drop database operation failed
+            // because of active connections on the database.
+            // To force dropping the database, we first have to close all active connections
+            // on that database and issue the drop database operation again.
+            if ($exception->getSQLState() !== '55006') {
+                throw $exception;
+            }
+
+            assert($this->_platform instanceof PostgreSqlPlatform);
+
+            $this->_execSql(
+                [
+                    $this->_platform->getDisallowDatabaseConnectionsSQL($database),
+                    $this->_platform->getCloseActiveDatabaseConnectionsSQL($database),
+                ]
+            );
+
+            parent::dropDatabase($database);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableTableForeignKeyDefinition($tableForeignKey)
+    {
+        $onUpdate       = null;
+        $onDelete       = null;
+        $localColumns   = [];
+        $foreignColumns = [];
+        $foreignTable   = null;
+
+        if (preg_match('(ON UPDATE ([a-zA-Z0-9]+( (NULL|ACTION|DEFAULT))?))', $tableForeignKey['condef'], $match)) {
+            $onUpdate = $match[1];
+        }
+
+        if (preg_match('(ON DELETE ([a-zA-Z0-9]+( (NULL|ACTION|DEFAULT))?))', $tableForeignKey['condef'], $match)) {
+            $onDelete = $match[1];
+        }
+
+        $result = preg_match('/FOREIGN KEY \((.+)\) REFERENCES (.+)\((.+)\)/', $tableForeignKey['condef'], $values);
+        assert($result === 1);
+
+        // PostgreSQL returns identifiers that are keywords with quotes, we need them later, don't get
+        // the idea to trim them here.
+        $localColumns   = array_map('trim', explode(',', $values[1]));
+        $foreignColumns = array_map('trim', explode(',', $values[3]));
+        $foreignTable   = $values[2];
+
+        return new ForeignKeyConstraint(
+            $localColumns,
+            $foreignTable,
+            $foreignColumns,
+            $tableForeignKey['conname'],
+            ['onUpdate' => $onUpdate, 'onDelete' => $onDelete]
+        );
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableTriggerDefinition($trigger)
+    {
+        return $trigger['trigger_name'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableViewDefinition($view)
+    {
+        return new View($view['schemaname'] . '.' . $view['viewname'], $view['definition']);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableUserDefinition($user)
+    {
+        return [
+            'user' => $user['usename'],
+            'password' => $user['passwd'],
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableTableDefinition($table)
+    {
+        $schemas     = $this->getExistingSchemaSearchPaths();
+        $firstSchema = array_shift($schemas);
+
+        if ($table['schema_name'] === $firstSchema) {
+            return $table['table_name'];
+        }
+
+        return $table['schema_name'] . '.' . $table['table_name'];
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @link http://ezcomponents.org/docs/api/trunk/DatabaseSchema/ezcDbSchemaPgsqlReader.html
+     */
+    protected function _getPortableTableIndexesList($tableIndexes, $tableName = null)
+    {
+        $buffer = [];
+        foreach ($tableIndexes as $row) {
+            $colNumbers    = array_map('intval', explode(' ', $row['indkey']));
+            $columnNameSql = sprintf(
+                'SELECT attnum, attname FROM pg_attribute WHERE attrelid=%d AND attnum IN (%s) ORDER BY attnum ASC',
+                $row['indrelid'],
+                implode(' ,', $colNumbers)
+            );
+
+            $indexColumns = $this->_conn->fetchAllAssociative($columnNameSql);
+
+            // required for getting the order of the columns right.
+            foreach ($colNumbers as $colNum) {
+                foreach ($indexColumns as $colRow) {
+                    if ($colNum !== $colRow['attnum']) {
+                        continue;
+                    }
+
+                    $buffer[] = [
+                        'key_name' => $row['relname'],
+                        'column_name' => trim($colRow['attname']),
+                        'non_unique' => ! $row['indisunique'],
+                        'primary' => $row['indisprimary'],
+                        'where' => $row['where'],
+                    ];
+                }
+            }
+        }
+
+        return parent::_getPortableTableIndexesList($buffer, $tableName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableDatabaseDefinition($database)
+    {
+        return $database['datname'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableSequencesList($sequences)
+    {
+        $sequenceDefinitions = [];
+
+        foreach ($sequences as $sequence) {
+            if ($sequence['schemaname'] !== 'public') {
+                $sequenceName = $sequence['schemaname'] . '.' . $sequence['relname'];
+            } else {
+                $sequenceName = $sequence['relname'];
+            }
+
+            $sequenceDefinitions[$sequenceName] = $sequence;
+        }
+
+        $list = [];
+
+        foreach ($this->filterAssetNames(array_keys($sequenceDefinitions)) as $sequenceName) {
+            $list[] = $this->_getPortableSequenceDefinition($sequenceDefinitions[$sequenceName]);
+        }
+
+        return $list;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function getPortableNamespaceDefinition(array $namespace)
+    {
+        return $namespace['nspname'];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableSequenceDefinition($sequence)
+    {
+        if ($sequence['schemaname'] !== 'public') {
+            $sequenceName = $sequence['schemaname'] . '.' . $sequence['relname'];
+        } else {
+            $sequenceName = $sequence['relname'];
+        }
+
+        if (! isset($sequence['increment_by'], $sequence['min_value'])) {
+            /** @var string[] $data */
+            $data = $this->_conn->fetchAssoc(
+                'SELECT min_value, increment_by FROM ' . $this->_platform->quoteIdentifier($sequenceName)
+            );
+
+            $sequence += $data;
+        }
+
+        return new Sequence($sequenceName, (int) $sequence['increment_by'], (int) $sequence['min_value']);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function _getPortableTableColumnDefinition($tableColumn)
+    {
+        $tableColumn = array_change_key_case($tableColumn, CASE_LOWER);
+
+        if (strtolower($tableColumn['type']) === 'varchar' || strtolower($tableColumn['type']) === 'bpchar') {
+            // get length from varchar definition
+            $length                = preg_replace('~.*\(([0-9]*)\).*~', '$1', $tableColumn['complete_type']);
+            $tableColumn['length'] = $length;
+        }
+
+        $matches = [];
+
+        $autoincrement = false;
+        if ($tableColumn['default'] !== null && preg_match("/^nextval\('(.*)'(::.*)?\)$/", $tableColumn['default'], $matches)) {
+            $tableColumn['sequence'] = $matches[1];
+            $tableColumn['default']  = null;
+            $autoincrement           = true;
+        }
+
+        if ($tableColumn['default'] !== null) {
+            if (preg_match("/^['(](.*)[')]::/", $tableColumn['default'], $matches)) {
+                $tableColumn['default'] = $matches[1];
+            } elseif (preg_match('/^NULL::/', $tableColumn['default'])) {
+                $tableColumn['default'] = null;
+            }
+        }
+
+        $length = $tableColumn['length'] ?? null;
+        if ($length === '-1' && isset($tableColumn['atttypmod'])) {
+            $length = $tableColumn['atttypmod'] - 4;
+        }
+
+        if ((int) $length <= 0) {
+            $length = null;
+        }
+
+        $fixed = null;
+
+        if (! isset($tableColumn['name'])) {
+            $tableColumn['name'] = '';
+        }
+
+        $precision = null;
+        $scale     = null;
+        $jsonb     = null;
+
+        $dbType = strtolower($tableColumn['type']);
+        if ($tableColumn['domain_type'] !== null
+            && strlen($tableColumn['domain_type'])
+            && ! $this->_platform->hasDoctrineTypeMappingFor($tableColumn['type'])
+        ) {
+            $dbType                       = strtolower($tableColumn['domain_type']);
+            $tableColumn['complete_type'] = $tableColumn['domain_complete_type'];
+        }
+
+        $type                   = $this->_platform->getDoctrineTypeMapping($dbType);
+        $type                   = $this->extractDoctrineTypeFromComment($tableColumn['comment'], $type);
+        $tableColumn['comment'] = $this->removeDoctrineTypeFromComment($tableColumn['comment'], $type);
+
+        switch ($dbType) {
+            case 'smallint':
+            case 'int2':
+                $tableColumn['default'] = $this->fixVersion94NegativeNumericDefaultValue($tableColumn['default']);
+                $length                 = null;
+                break;
+
+            case 'int':
+            case 'int4':
+            case 'integer':
+                $tableColumn['default'] = $this->fixVersion94NegativeNumericDefaultValue($tableColumn['default']);
+                $length                 = null;
+                break;
+
+            case 'bigint':
+            case 'int8':
+                $tableColumn['default'] = $this->fixVersion94NegativeNumericDefaultValue($tableColumn['default']);
+                $length                 = null;
+                break;
+
+            case 'bool':
+            case 'boolean':
+                if ($tableColumn['default'] === 'true') {
+                    $tableColumn['default'] = true;
+                }
+
+                if ($tableColumn['default'] === 'false') {
+                    $tableColumn['default'] = false;
+                }
+
+                $length = null;
+                break;
+
+            case 'text':
+            case '_varchar':
+            case 'varchar':
+                $tableColumn['default'] = $this->parseDefaultExpression($tableColumn['default']);
+                $fixed                  = false;
+                break;
+            case 'interval':
+                $fixed = false;
+                break;
+
+            case 'char':
+            case 'bpchar':
+                $fixed = true;
+                break;
+
+            case 'float':
+            case 'float4':
+            case 'float8':
+            case 'double':
+            case 'double precision':
+            case 'real':
+            case 'decimal':
+            case 'money':
+            case 'numeric':
+                $tableColumn['default'] = $this->fixVersion94NegativeNumericDefaultValue($tableColumn['default']);
+
+                if (preg_match('([A-Za-z]+\(([0-9]+)\,([0-9]+)\))', $tableColumn['complete_type'], $match)) {
+                    $precision = $match[1];
+                    $scale     = $match[2];
+                    $length    = null;
+                }
+
+                break;
+
+            case 'year':
+                $length = null;
+                break;
+
+            // PostgreSQL 9.4+ only
+            case 'jsonb':
+                $jsonb = true;
+                break;
+        }
+
+        if ($tableColumn['default'] !== null && $tableColumn['default'] && preg_match("('([^']+)'::)", $tableColumn['default'], $match)) {
+            $tableColumn['default'] = $match[1];
+        }
+
+        $options = [
+            'length'        => $length,
+            'notnull'       => (bool) $tableColumn['isnotnull'],
+            'default'       => $tableColumn['default'],
+            'precision'     => $precision,
+            'scale'         => $scale,
+            'fixed'         => $fixed,
+            'unsigned'      => false,
+            'autoincrement' => $autoincrement,
+            'comment'       => isset($tableColumn['comment']) && $tableColumn['comment'] !== ''
+                ? $tableColumn['comment']
+                : null,
+        ];
+
+        $column = new Column($tableColumn['field'], Type::getType($type), $options);
+
+        if (isset($tableColumn['collation']) && ! empty($tableColumn['collation'])) {
+            $column->setPlatformOption('collation', $tableColumn['collation']);
+        }
+
+        if (in_array($column->getType()->getName(), [Types::JSON_ARRAY, Types::JSON], true)) {
+            $column->setPlatformOption('jsonb', $jsonb);
+        }
+
+        return $column;
+    }
+
+    /**
+     * PostgreSQL 9.4 puts parentheses around negative numeric default values that need to be stripped eventually.
+     *
+     * @param mixed $defaultValue
+     *
+     * @return mixed
+     */
+    private function fixVersion94NegativeNumericDefaultValue($defaultValue)
+    {
+        if ($defaultValue !== null && strpos($defaultValue, '(') === 0) {
+            return trim($defaultValue, '()');
+        }
+
+        return $defaultValue;
+    }
+
+    /**
+     * Parses a default value expression as given by PostgreSQL
+     */
+    private function parseDefaultExpression(?string $default): ?string
+    {
+        if ($default === null) {
+            return $default;
+        }
+
+        return str_replace("''", "'", $default);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function listTableDetails($name): Table
+    {
+        $table = parent::listTableDetails($name);
+
+        $platform = $this->_platform;
+        assert($platform instanceof PostgreSqlPlatform);
+        $sql = $platform->getListTableMetadataSQL($name);
+
+        $tableOptions = $this->_conn->fetchAssoc($sql);
+
+        if ($tableOptions !== false) {
+            $table->addOption('comment', $tableOptions['table_comment']);
+        }
+
+        return $table;
+    }
+}