opensearch-docs-cn/docs/ppl/datatypes.md

layout	title	parent	nav_order
default	Data Types	Piped processing language	6

Data types

The following table shows the data types supported by the PPL plugin and how each one maps to OpenSearch and SQL data types:

PPL Type	OpenSearch Type	SQL Type
boolean	boolean	BOOLEAN
byte	byte	TINYINT
byte	short	SMALLINT
integer	integer	INTEGER
long	long	BIGINT
float	float	REAL
float	half_float	FLOAT
float	scaled_float	DOUBLE
double	double	DOUBLE
string	keyword	VARCHAR
text	text	VARCHAR
timestamp	date	TIMESTAMP
ip	ip	VARCHAR
timestamp	date	TIMESTAMP
binary	binary	VARBINARY
struct	object	STRUCT
array	nested	STRUCT

In addition to this list, the PPL plugin also supports the datetime type, though it doesn't have a corresponding mapping with OpenSearch. To use a function without a corresponding mapping, you must explicitly convert the data type to one that does.

The PPL plugin supports all SQL date and time types. To learn more, see SQL Data Types.