Retrieve an object using the tutorial shown in the Flask-SQLAlchemy documentation. Once you have the entity that you want to change, change the entity itself. Then, db.session.commit(). For example: Flask-SQLAlchemy is based on SQLAlchemy, so be sure to check out the SQLAlchemy Docs as well.
I think you’re looking for the Column and Data Types page in the documentation. A little HTML parsing gives: ARRAY BIGINT BINARY BLOB BOOLEAN BigInteger Boolean CHAR CLOB Concatenable DATE DATETIME DECIMAL Date DateTime Enum FLOAT Float INT INTEGER Integer Interval LargeBinary MatchType NCHAR NVARCHAR Numeric PickleType REAL SMALLINT SchemaType SmallInteger String TEXT TIME TIMESTAMP Text Time … Read more