Modify databasechangelog table structure

Author: molivasdat

samples/java/liquibase/create_database_change_log.sql

@@ -9,7 +9,7 @@ CREATE TABLE databasechangeloglock (
 );
 
 CREATE TABLE databasechangelog (
-    ID VARCHAR(255) NOT NULL PRIMARY KEY,
+    ID VARCHAR(255) NOT NULL,
     AUTHOR VARCHAR(255) NOT NULL,
     FILENAME VARCHAR(255) NOT NULL,
     DATEEXECUTED TIMESTAMPTZ NOT NULL,
@@ -22,7 +22,8 @@ CREATE TABLE databasechangelog (
     LIQUIBASE VARCHAR(20),
     CONTEXTS VARCHAR(255),
     LABELS VARCHAR(255),
-    DEPLOYMENT_ID VARCHAR(10)
+    DEPLOYMENT_ID VARCHAR(10),
+    PRIMARY KEY(ID,AUTHOR,FILENAME)
 );
 
 RUN BATCH;