From a35cc192ad6bbf055fb774803f5d5e2de3008395 Mon Sep 17 00:00:00 2001
From: Omar Ramos <omar@planetscale.com>
Date: Mon, 12 Sep 2022 11:44:01 -0700
Subject: [PATCH 1/4] Added support for identifier delimiter modification.

---
 src/Medoo.php | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/src/Medoo.php b/src/Medoo.php
index 6d4bad89..e8b699e0 100644
--- a/src/Medoo.php
+++ b/src/Medoo.php
@@ -83,6 +83,15 @@ class Medoo
      */
     protected $prefix;
 
+    /**
+     * The identifier delimiter used for quoting table and column names.
+     *
+     * Defaults to the SQL-92 standard delimiter.
+     *
+     * @var string
+     */
+    protected $identifierDelimiter = '""';
+
     /**
      * The PDO statement object.
      *
@@ -702,6 +711,24 @@ public function quote(string $string): string
         return "'" . preg_replace('/\'/', '\'\'', $string) . "'";
     }
 
+    /**
+     * Sets the identifier delimiter for use when quoting tables or columns.
+     *
+     * Ensures it is set to a two-character string for usage with databases
+     * like SQL Server where square brackets are used rather than a single character.
+     *
+     * @param string $identifierDelimiter
+     * @return void
+     */
+    public function setIdentifierDelimiter(string $identifierDelimiter): void
+    {
+        if (strlen($identifierDelimiter) === 2) {
+            $this->identifierDelimiter = $identifierDelimiter;
+        } elseif (strlen($identifierDelimiter) === 1) {
+            $this->identifierDelimiter = $identifierDelimiter . $identifierDelimiter;
+        }
+    }
+
     /**
      * Quote table name for use in a query.
      *
@@ -711,7 +738,7 @@ public function quote(string $string): string
     public function tableQuote(string $table): string
     {
         if (preg_match('/^[\p{L}_][\p{L}\p{N}@$#\-_]*$/u', $table)) {
-            return '"' . $this->prefix . $table . '"';
+            return $this->identifierDelimiter[0] . $this->prefix . $table . $this->identifierDelimiter[1];
         }
 
         throw new InvalidArgumentException("Incorrect table name: {$table}.");
@@ -727,8 +754,8 @@ public function columnQuote(string $column): string
     {
         if (preg_match('/^[\p{L}_][\p{L}\p{N}@$#\-_]*(\.?[\p{L}_][\p{L}\p{N}@$#\-_]*)?$/u', $column)) {
             return strpos($column, '.') !== false ?
-                '"' . $this->prefix . str_replace('.', '"."', $column) . '"' :
-                '"' . $column . '"';
+                $this->identifierDelimiter[0] . $this->prefix . str_replace('.', '"."', $column) . $this->identifierDelimiter[1] :
+                $this->identifierDelimiter[0] . $column . $this->identifierDelimiter[1];
         }
 
         throw new InvalidArgumentException("Incorrect column name: {$column}.");

From 0a2ce5673ebbe0eb2ea507e98f362addd66387d7 Mon Sep 17 00:00:00 2001
From: Omar Ramos <omar@planetscale.com>
Date: Mon, 12 Sep 2022 12:22:12 -0700
Subject: [PATCH 2/4] Made new method chainable and corrected issue in
 columnQuote()

---
 src/Medoo.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/Medoo.php b/src/Medoo.php
index e8b699e0..7fba7b15 100644
--- a/src/Medoo.php
+++ b/src/Medoo.php
@@ -718,15 +718,17 @@ public function quote(string $string): string
      * like SQL Server where square brackets are used rather than a single character.
      *
      * @param string $identifierDelimiter
-     * @return void
+     * @return Medoo
      */
-    public function setIdentifierDelimiter(string $identifierDelimiter): void
+    public function setIdentifierDelimiter(string $identifierDelimiter): self
     {
         if (strlen($identifierDelimiter) === 2) {
             $this->identifierDelimiter = $identifierDelimiter;
         } elseif (strlen($identifierDelimiter) === 1) {
             $this->identifierDelimiter = $identifierDelimiter . $identifierDelimiter;
         }
+
+		return $this;
     }
 
     /**
@@ -754,7 +756,7 @@ public function columnQuote(string $column): string
     {
         if (preg_match('/^[\p{L}_][\p{L}\p{N}@$#\-_]*(\.?[\p{L}_][\p{L}\p{N}@$#\-_]*)?$/u', $column)) {
             return strpos($column, '.') !== false ?
-                $this->identifierDelimiter[0] . $this->prefix . str_replace('.', '"."', $column) . $this->identifierDelimiter[1] :
+                $this->identifierDelimiter[0] . $this->prefix . str_replace('.', $this->identifierDelimiter[0] . '.' . $this->identifierDelimiter[1], $column) . $this->identifierDelimiter[1] :
                 $this->identifierDelimiter[0] . $column . $this->identifierDelimiter[1];
         }
 

From 69462ae75166429758bc00f66ad0ad87043f46f1 Mon Sep 17 00:00:00 2001
From: Omar Ramos <omar@planetscale.com>
Date: Mon, 12 Sep 2022 12:23:12 -0700
Subject: [PATCH 3/4] Convert tabs to spaces

---
 src/Medoo.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Medoo.php b/src/Medoo.php
index 7fba7b15..eb56e3b1 100644
--- a/src/Medoo.php
+++ b/src/Medoo.php
@@ -728,7 +728,7 @@ public function setIdentifierDelimiter(string $identifierDelimiter): self
             $this->identifierDelimiter = $identifierDelimiter . $identifierDelimiter;
         }
 
-		return $this;
+        return $this;
     }
 
     /**

From 01f561947b754a409be3ea5b22ed86a9cad2a494 Mon Sep 17 00:00:00 2001
From: Omar Ramos <omar@planetscale.com>
Date: Mon, 12 Sep 2022 13:18:50 -0700
Subject: [PATCH 4/4] Small logic correction in columnQuote()

---
 src/Medoo.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Medoo.php b/src/Medoo.php
index eb56e3b1..d693fd67 100644
--- a/src/Medoo.php
+++ b/src/Medoo.php
@@ -756,7 +756,7 @@ public function columnQuote(string $column): string
     {
         if (preg_match('/^[\p{L}_][\p{L}\p{N}@$#\-_]*(\.?[\p{L}_][\p{L}\p{N}@$#\-_]*)?$/u', $column)) {
             return strpos($column, '.') !== false ?
-                $this->identifierDelimiter[0] . $this->prefix . str_replace('.', $this->identifierDelimiter[0] . '.' . $this->identifierDelimiter[1], $column) . $this->identifierDelimiter[1] :
+                $this->identifierDelimiter[0] . $this->prefix . str_replace('.', $this->identifierDelimiter[1] . '.' . $this->identifierDelimiter[0], $column) . $this->identifierDelimiter[1] :
                 $this->identifierDelimiter[0] . $column . $this->identifierDelimiter[1];
         }