diff --git a/src/Database/Concerns/ManagesPostgresUsers.php b/src/Database/Concerns/ManagesPostgresUsers.php
index 6abe6cea..09632f9a 100644
--- a/src/Database/Concerns/ManagesPostgresUsers.php
+++ b/src/Database/Concerns/ManagesPostgresUsers.php
@@ -80,6 +80,6 @@ trait ManagesPostgresUsers
 
     public function userExists(string $username): bool
     {
-        return (bool) $this->connection()->select("SELECT usename FROM pg_user WHERE usename = ?", [$username]);
+        return (bool) $this->connection()->select('SELECT usename FROM pg_user WHERE usename = ?', [$username]);
     }
 }
diff --git a/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
index df3ecb60..e40f9e6e 100644
--- a/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
@@ -24,6 +24,6 @@ class MicrosoftSQLDatabaseManager extends TenantDatabaseManager
 
     public function databaseExists(string $name): bool
     {
-        return (bool) $this->connection()->select("SELECT name FROM master.sys.databases WHERE name = ?", [$name]);
+        return (bool) $this->connection()->select('SELECT name FROM master.sys.databases WHERE name = ?', [$name]);
     }
 }
diff --git a/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
index 34978a82..605db7de 100644
--- a/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
@@ -28,6 +28,6 @@ class MySQLDatabaseManager extends TenantDatabaseManager
 
     public function databaseExists(string $name): bool
     {
-        return (bool) $this->connection()->select("SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = ?", [$name]);
+        return (bool) $this->connection()->select('SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = ?', [$name]);
     }
 }
diff --git a/src/Database/TenantDatabaseManagers/PermissionControlledMicrosoftSQLServerDatabaseManager.php b/src/Database/TenantDatabaseManagers/PermissionControlledMicrosoftSQLServerDatabaseManager.php
index 69fb77b2..ee37047b 100644
--- a/src/Database/TenantDatabaseManagers/PermissionControlledMicrosoftSQLServerDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/PermissionControlledMicrosoftSQLServerDatabaseManager.php
@@ -47,7 +47,7 @@ class PermissionControlledMicrosoftSQLServerDatabaseManager extends MicrosoftSQL
 
     public function userExists(string $username): bool
     {
-        return (bool) $this->connection()->select("SELECT sp.name as username FROM sys.server_principals sp WHERE sp.name = ?", [$username]);
+        return (bool) $this->connection()->select('SELECT sp.name as username FROM sys.server_principals sp WHERE sp.name = ?', [$username]);
     }
 
     public function makeConnectionConfig(array $baseConfig, string $databaseName): array
diff --git a/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
index d5b64205..ad4d6583 100644
--- a/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
@@ -58,6 +58,6 @@ class PermissionControlledMySQLDatabaseManager extends MySQLDatabaseManager impl
 
     public function userExists(string $username): bool
     {
-        return (bool) $this->connection()->select("SELECT count(*) FROM mysql.user WHERE user = ?", [$username])[0]->{'count(*)'};
+        return (bool) $this->connection()->select('SELECT count(*) FROM mysql.user WHERE user = ?', [$username])[0]->{'count(*)'};
     }
 }
diff --git a/src/Database/TenantDatabaseManagers/PermissionControlledPostgreSQLSchemaManager.php b/src/Database/TenantDatabaseManagers/PermissionControlledPostgreSQLSchemaManager.php
index 69773a3b..9fc66c6f 100644
--- a/src/Database/TenantDatabaseManagers/PermissionControlledPostgreSQLSchemaManager.php
+++ b/src/Database/TenantDatabaseManagers/PermissionControlledPostgreSQLSchemaManager.php
@@ -36,7 +36,7 @@ class PermissionControlledPostgreSQLSchemaManager extends PostgreSQLSchemaManage
             $tableName = $table->table_name;
 
             /** @var string $primaryKey */
-            $primaryKey = $this->connection()->selectOne(<<<SQL
+            $primaryKey = $this->connection()->selectOne(<<<'SQL'
                 SELECT column_name
                 FROM information_schema.key_column_usage
                 WHERE table_name = ?
diff --git a/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
index 1724d470..e1219e8c 100644
--- a/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
@@ -24,6 +24,6 @@ class PostgreSQLDatabaseManager extends TenantDatabaseManager
 
     public function databaseExists(string $name): bool
     {
-        return (bool) $this->connection()->select("SELECT datname FROM pg_database WHERE datname = ?", [$name]);
+        return (bool) $this->connection()->select('SELECT datname FROM pg_database WHERE datname = ?', [$name]);
     }
 }
diff --git a/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php b/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
index b3dbfb9e..3ffbc858 100644
--- a/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
+++ b/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
@@ -24,7 +24,7 @@ class PostgreSQLSchemaManager extends TenantDatabaseManager
 
     public function databaseExists(string $name): bool
     {
-        return (bool) $this->connection()->select("SELECT schema_name FROM information_schema.schemata WHERE schema_name = ?", [$name]);
+        return (bool) $this->connection()->select('SELECT schema_name FROM information_schema.schemata WHERE schema_name = ?', [$name]);
     }
 
     public function makeConnectionConfig(array $baseConfig, string $databaseName): array