summaryrefslogtreecommitdiffstats
path: root/system/database/drivers/mysql
diff options
context:
space:
mode:
authorDerek Jones <derek.jones@ellislab.com>2010-03-03 00:28:07 +0100
committerDerek Jones <derek.jones@ellislab.com>2010-03-03 00:28:07 +0100
commit20aa2bd6d852530b3d4b2e76076fe7e7b48bf148 (patch)
treee673e406dc189a5ae803659f51a0f52a18a66cbd /system/database/drivers/mysql
parent30b35eb12edef6018fe61f383a002d895683e468 (diff)
added batch insert/update and replace methods to MySQL driver
Diffstat (limited to 'system/database/drivers/mysql')
-rw-r--r--system/database/drivers/mysql/mysql_driver.php92
1 files changed, 92 insertions, 0 deletions
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index bd60d9ffe..d684c8a49 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -537,6 +537,44 @@ class CI_DB_mysql_driver extends CI_DB {
// --------------------------------------------------------------------
+
+ /**
+ * Replace statement
+ *
+ * Generates a platform-specific replace string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _replace($table, $keys, $values)
+ {
+ return "REPLACE INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Insert_batch statement
+ *
+ * Generates a platform-specific insert string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the insert keys
+ * @param array the insert values
+ * @return string
+ */
+ function _insert_batch($table, $keys, $values)
+ {
+ return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values);
+ }
+
+ // --------------------------------------------------------------------
+
+
/**
* Update statement
*
@@ -572,6 +610,60 @@ class CI_DB_mysql_driver extends CI_DB {
// --------------------------------------------------------------------
+
+ /**
+ * Update_Batch statement
+ *
+ * Generates a platform-specific batch update string from the supplied data
+ *
+ * @access public
+ * @param string the table name
+ * @param array the update data
+ * @param array the where clause
+ * @return string
+ */
+ function _update_batch($table, $values, $index, $where = NULL)
+ {
+ $ids = array();
+ $where = ($where != '' AND count($where) >=1) ? implode(" ", $where).' AND ' : '';
+
+ foreach($values as $key => $val)
+ {
+ $ids[] = $val[$index];
+
+ foreach(array_keys($val) as $field)
+ {
+ if ($field != $index)
+ {
+ $final[$field][] = 'WHEN '.$index.' = '.$val[$index].' THEN '.$val[$field];
+ }
+ }
+ }
+
+ $sql = "UPDATE ".$table." SET ";
+ $cases = '';
+
+ foreach($final as $k => $v)
+ {
+ $cases .= $k.' = CASE '."\n";
+ foreach ($v as $row)
+ {
+ $cases .= $row."\n";
+ }
+
+ $cases .= 'ELSE '.$k.' END, ';
+ }
+
+ $sql .= substr($cases, 0, -2);
+
+ $sql .= ' WHERE '.$where.$index.' IN ('.implode(',', $ids).')';
+
+ return $sql;
+ }
+
+ // --------------------------------------------------------------------
+
+
/**
* Truncate statement
*