ENGCOM-6204: Added backticks to table names in mysql schema reader. #25354

 - Merge Pull Request #25354 from vincenthornikx/magento2:2.3-develop
 - Merged commits:
   1. 876c45d
   2. 01621ca

Author: magento-engcom-team

lib/internal/Magento/Framework/Setup/Declaration/Schema/Db/MySQL/DbSchemaReader.php

@@ -126,7 +126,7 @@ public function readIndexes($tableName, $resource)
         $indexes = [];
         $adapter = $this->resourceConnection->getConnection($resource);
         $condition = sprintf('`Non_unique` = 1');
-        $sql = sprintf('SHOW INDEXES FROM %s WHERE %s', $tableName, $condition);
+        $sql = sprintf('SHOW INDEXES FROM `%s` WHERE %s', $tableName, $condition);
         $stmt = $adapter->query($sql);
 
         // Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
@@ -147,9 +147,10 @@ public function readIndexes($tableName, $resource)
     }
 
     /**
+     * Read references (foreign keys) from Magento tables.
+     *
      * As MySQL has bug and do not show foreign keys during DESCRIBE and other directives required
-     * to take it from SHOW CREATE TABLE ...
-     * command
+     * to take it from "SHOW CREATE TABLE ..." command.
      *
      * @inheritdoc
      */
@@ -170,13 +171,14 @@ public function readReferences($tableName, $resource)
     public function getCreateTableSql($tableName, $resource)
     {
         $adapter = $this->resourceConnection->getConnection($resource);
-        $sql = sprintf('SHOW CREATE TABLE %s', $tableName);
+        $sql = sprintf('SHOW CREATE TABLE `%s`', $tableName);
         $stmt = $adapter->query($sql);
         return $stmt->fetch(\Zend_Db::FETCH_ASSOC);
     }
 
     /**
      * Reading DB constraints.
+     *
      * Primary and unique constraints are always non_unique=0.
      *
      * @inheritdoc
@@ -186,7 +188,7 @@ public function readConstraints($tableName, $resource)
         $constraints = [];
         $adapter = $this->resourceConnection->getConnection($resource);
         $condition = sprintf('`Non_unique` = 0');
-        $sql = sprintf('SHOW INDEXES FROM %s WHERE %s', $tableName, $condition);
+        $sql = sprintf('SHOW INDEXES FROM `%s` WHERE %s', $tableName, $condition);
         $stmt = $adapter->query($sql);
 
         // Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection