+ Replace AUTO_INCREMENT columns with INTEGER PRIMARY KEY for SQLite or
+ serial for Postgres.
+
+ Change TINYINT to SMALLINT. Remove UNSIGNED.
+ For Postgres replace int with INTEGER.
+
+ Remove CHARACTER SET, COLLATE and COMMENT from column definitions.
+
+ Remove KEY and inde name from UNIQUE KEY:
+ UNIQUE KEY name (columns) -> UNIQUE (columns).
+
+ Change multicolumn PRIMARY KEY to UNIQUE.
+