INT Data Type
A 4-byte integer data type used in CREATE TABLE and ALTER TABLE statements.
In the column definition of a CREATE TABLE statement:
Range: -2147483648 .. 2147483647. There is no UNSIGNED subtype.
Conversions: Impala automatically converts to a larger integer type (BIGINT) or a floating-point type (FLOAT or DOUBLE) automatically. Use CAST() to convert to TINYINT, SMALLINT, STRING, or TIMESTAMP. Casting an integer or floating-point value N to TIMESTAMP produces a value that is N seconds past the start of the epoch date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone. If the setting -use_local_tz_for_unix_timestamp_conversions=true is in effect, the resulting TIMESTAMP represents a date and time in the local time zone.
The data type INTEGER is an alias for INT.
For a convenient and automated way to check the bounds of the INT type, call the functions MIN_INT() and MAX_INT().
If an integer value is too large to be represented as a INT, use a BIGINT instead.
NULL considerations: Casting any non-numeric value to this type produces a NULL value.
CREATE TABLE t1 (x INT); SELECT CAST(1000 AS INT);
Partitioning: Prefer to use this type for a partition key column. Impala can process the numeric type more efficiently than a STRING representation of the value.
HBase considerations: This data type is fully compatible with HBase tables.
Text table considerations: Values of this type are potentially larger in text tables than in tables using Parquet or other binary formats.
Internal details: Represented in memory as a 4-byte value.
Added in: Available in all versions of Impala.
Column statistics considerations: Because this type has a fixed size, the maximum and average size fields are always filled in for column statistics, even before you run the COMPUTE STATS statement.