diff --git a/htdocs/install/mysql/migration/3.8.0-3.9.0.sql b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
new file mode 100755
index 00000000000..23e26ed7e48
--- /dev/null
+++ b/htdocs/install/mysql/migration/3.8.0-3.9.0.sql
@@ -0,0 +1,21 @@
+--
+-- Be carefull to requests order.
+-- This file must be loaded by calling /install/index.php page
+-- when current version is 3.8.0 or higher.
+--
+-- To rename a table:       ALTER TABLE llx_table RENAME TO llx_table_new;
+-- To add a column:         ALTER TABLE llx_table ADD COLUMN newcol varchar(60) NOT NULL DEFAULT '0' AFTER existingcol;
+-- To rename a column:      ALTER TABLE llx_table CHANGE COLUMN oldname newname varchar(60);
+-- To drop a column:        ALTER TABLE llx_table DROP COLUMN oldname;
+-- To change type of field: ALTER TABLE llx_table MODIFY COLUMN name varchar(60);
+-- To drop a foreign key:   ALTER TABLE llx_table DROP FOREIGN KEY fk_name;
+-- To restrict request to Mysql version x.y use -- VMYSQLx.y
+-- To restrict request to Pgsql version x.y use -- VPGSQLx.y
+-- To make pk to be auto increment (mysql):    VMYSQL4.3 ALTER TABLE llx_c_shipment_mode CHANGE COLUMN rowid rowid INTEGER NOT NULL AUTO_INCREMENT;
+-- To make pk to be auto increment (postgres): VPGSQL8.2 NOT POSSIBLE. MUST DELETE/CREATE TABLE
+-- To set a field as NULL:                     VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN name DROP NOT NULL;
+-- To set a field as default NULL:             VPGSQL8.2 ALTER TABLE llx_table ALTER COLUMN name SET DEFAULT NULL;
+-- -- VPGSQL8.2 DELETE FROM llx_usergroup_user      WHERE fk_user      NOT IN (SELECT rowid from llx_user);
+-- -- VMYSQL4.1 DELETE FROM llx_usergroup_user      WHERE fk_usergroup NOT IN (SELECT rowid from llx_usergroup);
+
+ALTER TABLE llx_societe_commerciaux ADD COLUMN import_key varchar(14) AFTER fk_user;
diff --git a/htdocs/install/mysql/tables/llx_societe_commerciaux.sql b/htdocs/install/mysql/tables/llx_societe_commerciaux.sql
index f9305c71a09..20083645638 100644
--- a/htdocs/install/mysql/tables/llx_societe_commerciaux.sql
+++ b/htdocs/install/mysql/tables/llx_societe_commerciaux.sql
@@ -21,6 +21,7 @@ create table llx_societe_commerciaux
 (
   rowid         integer AUTO_INCREMENT PRIMARY KEY,
   fk_soc        integer,
-  fk_user       integer
+  fk_user       integer,
+  import_key	varchar(14)
 )ENGINE=innodb;