mssql: { BLOB: [Function: BLOB], BOOLEAN: [Function: BOOLEAN], ENUM: [Function: ENUM], STRING: [Function: STRING], UUID: [Function: UUID], DATE: [Function: DATE], DATEONLY: [Function: DATEONLY], NOW: [Function: NOW], TINYINT: [Function: TINYINT], SMALLINT: [Function: SMALLINT], INTEGER: [Function: INTEGER], BIGINT: [Function: BIGINT], REAL: [Function: REAL], FLOAT: [Function: FLOAT], TEXT: [Function: TEXT] },

https://sequelize.org/master/class/lib/dialects/abstract/query-interface.js~QueryInterface.html#instance-method-addColumn