The jOOQ User Manual SQL building Data types Built-in data types NVARCHAR (String)

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NVARCHAR (String)

Supported by ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

The NVARCHAR data type represents a variable length "national" (unicode) string type, or java.lang.String in Java, or Types.NVARCHAR in JDBC.

Given the variable size characteristic, the NVARCHAR type may or may not be accompanied by an explicit length flag. If absent, the default in most dialects is to set the maximum length available.

DDL support

Dialect support

This example using jOOQ:

createTable("t").column("c", NVARCHAR(16))

Translates to the following dialect specific expressions:

Access

CREATE TABLE t (
  c text(16)
)

ASE, Sybase

CREATE TABLE t (
  c nvarchar(16) NULL
)

Aurora MySQL, Aurora Postgres, CockroachDB, DB2, Derby, DuckDB, Firebird, HSQLDB, MariaDB, MemSQL, MySQL, Postgres, Redshift, Snowflake, Teradata, Trino, Vertica, YugabyteDB

CREATE TABLE t (
  c varchar(16)
)

BigQuery

CREATE TABLE t (
  c string
)

ClickHouse

CREATE TABLE t (
  c Nullable(varchar(16))
)
ENGINE Log()

Databricks

CREATE TABLE t (
  c varchar(16)
)
TBLPROPERTIES(
  'delta.columnMapping.mode' = 'name',
  'delta.feature.allowColumnDefaults' = 'supported'
)

Exasol, H2, Hana, Informix, SQLDataWarehouse, SQLServer, SQLite

CREATE TABLE t (
  c nvarchar(16)
)

Oracle

CREATE TABLE t (
  c nvarchar2(16)
)

Cast support

Dialect support

This example using jOOQ:

cast(field("c"), NVARCHAR(16))

Translates to the following dialect specific expressions:

Access

cstr(c)

ASE, Exasol, H2, Hana, Informix, SQLDataWarehouse, SQLServer, SQLite, Sybase

CAST(c AS nvarchar(16))

Aurora MySQL, MariaDB, MemSQL, MySQL

CAST(c AS char(16))

Aurora Postgres, CockroachDB, DB2, Databricks, Derby, DuckDB, Firebird, HSQLDB, Postgres, Redshift, Snowflake, Teradata, Trino, Vertica, YugabyteDB

CAST(c AS varchar(16))

BigQuery

CAST(c AS string)

ClickHouse

CAST(c AS Nullable(varchar(16)))

Oracle

CAST(c AS nvarchar2(16))

The jOOQ User Manual SQL building Data types Built-in data types NVARCHAR (String)

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