ANSI Data Types

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Description

SQL statements that create tables and clusters can also use ANSI data types and data types from the IBM products SQL/DS and DB2. Oracle recognizes the ANSI or IBM data type name that differs from the Oracle Database data type name. It converts the data type to the equivalent Oracle data type, records the Oracle data type as the name of the column data type, and stores the column data in the Oracle data type based on the conversions shown in the tables that follow. (Oracle Language Reference ANSI, DB2, and SQL/DS Data Types).

When creating a new table, Oracle and Snowflake handle some data types as synonyms and aliases and transform them into the default data type. As shown in the next table:

ANSI
ORACLE
SNOWFLAKE

CHARACTER (n)

CHAR (n)

VARCHAR

CHAR (n)

CHAR (n)

VARCHAR

CHARACTER VARYING (n)

VARCHAR2 (n)

VARCHAR

CHAR VARYING (n)

VARCHAR2 (n)

VARCHAR

NATIONAL CHARACTER (n)

NCHAR (n)

VARCHAR*

NATIONAL CHAR (n)

NCHAR (n)

VARCHAR*

NCHAR (n)

NCHAR (n)

VARCHAR

NATIONAL CHARACTER VARYING (n)

NVARCHAR2 (n)

VARCHAR*

NATIONAL CHAR VARYING (n)

NVARCHAR2 (n)

VARCHAR*

NCHAR VARYING (n)

NVARCHAR2 (n)

NUMBER (p, s)

NUMERIC [(p, s)]

NUMBER (p, s)

NUMBER (p, s)

DECIMAL [(p, s)]

NUMBER (p, s)

NUMBER (38)

INTEGER

NUMBER (38)

NUMBER (38)

INT

NUMBER (38)

NUMBER (38)

SMALLINT

NUMBER (38)

NUMBER (38)

FLOAT

FLOAT (126)

DOUBLE

DOUBLE PRECISION

FLOAT (126)

DOUBLE

REAL

FLOAT (63)

DOUBLE

To get more information about the translation specification of the Oracle data types, go to Oracle Built-in Data Types.

VARCHAR*: Almost all the ANSI datatypes compile in Snowflake, but those marked with an asterisk, are manually converted to VARCHAR.

Known Issues

No issues were found.

EWIs related to these data types are specified in the transformation of the Oracle Built-in data types.

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