SQL types mapping: IBM DB2 LUW

Table 1. SQL data types mapping for IBM® DB2® LUW
Original data types	DB2 data types
`CHAR(n)`	`CHAR(n)` or `NCHAR(n)` (see note 1)
`VARCHAR(n[,m])`	`VARCHAR(n)` or `NVARCHAR(n)` (see note 1)
`LVARCHAR(n)`	`VARCHAR(n)` or `NVARCHAR(n)` (see note 1)
`NCHAR(n)`	`NCHAR(n)` (synonym! see note 1)
`NVARCHAR(n[,m])`	`NVARCHAR(n[,m])` (synonym! note 1)
`BOOLEAN`	`BOOLEAN` (`CHAR(1)` with DB2 < 11.1)
`SMALLINT`	`SMALLINT`
`INTEGER`	`INTEGER`
`BIGINT`	`BIGINT`
`INT8`	`BIGINT`
`SERIAL[(start)]`	`INTEGER` (see note 2)
`BIGSERIAL[(start)]`	`BIGINT` (see note 2)
`SERIAL8[(start)]`	`BIGINT` (see note 2)
`DOUBLE PRECISION / FLOAT[(n)]`	`FLOAT[(n)] / DOUBLE`
`REAL / SMALLFLOAT`	`REAL`
`DECIMAL(p,s)`	`DECIMAL(p,s)` (max is 31 digits)
`DECIMAL(p)` with p<=15	`DECFLOAT(16)`
`DECIMAL(p)` with p>15	`DECFLOAT(16)` if p=16, `DECFLOAT(34)` if p>16
`DECIMAL`	`DECFLOAT(34)`
`MONEY(p,s)`	`DECIMAL(p,s)` (max is 31 digits)
`MONEY(p)`	`DECIMAL(p,2)` (max is 31 digits)
`MONEY`	`DECIMAL(16,2)`
`DATE`	`DATE`
`DATETIME HOUR TO MINUTE`	`TIME`
`DATETIME HOUR TO SECOND`	`TIME`
`DATETIME HOUR TO FRACTION(n)`	`TIMESTAMP` (for fraction storage)
`DATETIME YEAR TO MONTH`	`TIMESTAMP`
`DATETIME YEAR TO DAY`	`TIMESTAMP`
`DATETIME YEAR TO HOUR`	`TIMESTAMP`
`DATETIME YEAR TO MINUTE`	`TIMESTAMP`
`DATETIME YEAR TO SECOND`	`TIMESTAMP`
`DATETIME YEAR TO FRACTION(n)`	`TIMESTAMP`
`INTERVAL q1 TO q2`	`CHAR(50)`
`TEXT`	`CLOB` or `NCLOB` (see note 3)
`BYTE`	`BLOB` (see note 3)

Notes: