java.lang.Object
- com.gpudb.ColumnProperty

public final class ColumnProperty
extends Object

Column properties used for GPUdb types.

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`ARRAY`	Valid only for 'string' columns.
`static String`	`BOOLEAN`	This property provides optimized memory and query performance for int columns.
`static String`	`CHAR1`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR128`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR16`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR2`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR256`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR32`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR4`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR64`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`CHAR8`	This property provides optimized memory, disk and query performance for string columns.
`static String`	`COMPRESS`	This property indicates that this column should be compressed with the given codec and optional level; e.g., 'compress(snappy)' for Snappy compression and 'compress(zstd(7))' for zstd level 7 compression.
`static String`	`DATA`	Default property for all numeric and string type columns; makes the column available for GPU queries.
`static String`	`DATE`	Valid only for 'string' columns.
`static String`	`DATETIME`	Valid only for 'string' columns.
`static String`	`DECIMAL`	Valid only for 'string' columns.
`static String`	`DICT`	This property indicates that this column should be dictionary encoded.
`static String`	`INIT_WITH_NOW`	For 'date', 'time', 'datetime', or 'timestamp' column types, replace empty strings and invalid timestamps with 'NOW()' upon insert.
`static String`	`INIT_WITH_UUID`	For 'uuid' type, replace empty strings and invalid UUID values with randomly-generated UUIDs upon insert.
`static String`	`INT16`	This property provides optimized memory and query performance for int columns.
`static String`	`INT8`	This property provides optimized memory and query performance for int columns.
`static String`	`IPV4`	This property provides optimized memory, disk and query performance for string columns representing IPv4 addresses (i.e. 192.168.1.1).
`static String`	`JSON`	Valid only for 'string' columns.
`static String`	`NULLABLE`	This property indicates that this column is nullable.
`static String`	`PRIMARY_KEY`	This property indicates that this column will be part of (or the entire) primary key.
`static String`	`SHARD_KEY`	This property indicates that this column will be part of (or the entire) shard key.
`static String`	`SOFT_PRIMARY_KEY`	This property indicates that this column will be part of (or the entire) soft primary key.
`static String`	`TEXT_SEARCH`	Valid only for select 'string' columns.
`static String`	`TIME`	Valid only for 'string' columns.
`static String`	`TIMESTAMP`	Valid only for 'long' columns.
`static String`	`ULONG`	Valid only for 'string' columns.
`static String`	`UPDATE_WITH_NOW`	For 'date', 'time', 'datetime', or 'timestamp' column types, always update the field with 'NOW()' upon any update.
`static String`	`UUID`	Valid only for 'string' columns.
`static String`	`VECTOR`	Valid only for 'bytes' columns.
`static String`	`WKT`	Valid only for 'string' and 'bytes' columns.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DATA
```
public static final String DATA
```
    Default property for all numeric and string type columns; makes the column available for GPU queries.
    
    See Also:
    
    Constant Field Values
  - TEXT_SEARCH
```
public static final String TEXT_SEARCH
```
    Valid only for select 'string' columns. Enables full text search--see Full Text Search for details and applicable string column types.
    
    See Also:
    
    Constant Field Values
  - TIMESTAMP
```
public static final String TIMESTAMP
```
    Valid only for 'long' columns. Indicates that this field represents a timestamp and will be provided in milliseconds since the Unix epoch: 00:00:00 Jan 1 1970. Dates represented by a timestamp must fall between the year 1000 and the year 2900.
    
    See Also:
    
    Constant Field Values
  - ULONG
```
public static final String ULONG
```
    Valid only for 'string' columns. It represents an unsigned long integer data type. The string can only be interpreted as an unsigned long data type with minimum value of zero, and maximum value of 18446744073709551615.
    
    See Also:
    
    Constant Field Values
  - UUID
```
public static final String UUID
```
    Valid only for 'string' columns. It represents an uuid data type. Internally, it is stored as a 128-bit integer.
    
    See Also:
    
    Constant Field Values
  - DECIMAL
```
public static final String DECIMAL
```
    Valid only for 'string' columns. It represents a SQL type NUMERIC(19, 4) data type. There can be up to 15 digits before the decimal point and up to four digits in the fractional part. The value can be positive or negative (indicated by a minus sign at the beginning). This property is mutually exclusive with the TEXT_SEARCH property.
    
    See Also:
    
    Constant Field Values
  - DATE
```
public static final String DATE
```
    Valid only for 'string' columns. Indicates that this field represents a date and will be provided in the format 'YYYY-MM-DD'. The allowable range is 1000-01-01 through 2900-01-01. This property is mutually exclusive with the TEXT_SEARCH property.
    
    See Also:
    
    Constant Field Values
  - TIME
```
public static final String TIME
```
    Valid only for 'string' columns. Indicates that this field represents a time-of-day and will be provided in the format 'HH:MM:SS.mmm'. The allowable range is 00:00:00.000 through 23:59:59.999. This property is mutually exclusive with the TEXT_SEARCH property.
    
    See Also:
    
    Constant Field Values
  - DATETIME
```
public static final String DATETIME
```
    Valid only for 'string' columns. Indicates that this field represents a datetime and will be provided in the format 'YYYY-MM-DD HH:MM:SS.mmm'. The allowable range is 1000-01-01 00:00:00.000 through 2900-01-01 23:59:59.999. This property is mutually exclusive with the TEXT_SEARCH property.
    
    See Also:
    
    Constant Field Values
  - CHAR1
```
public static final String CHAR1
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 1 character.
    
    See Also:
    
    Constant Field Values
  - CHAR2
```
public static final String CHAR2
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 2 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR4
```
public static final String CHAR4
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 4 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR8
```
public static final String CHAR8
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 8 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR16
```
public static final String CHAR16
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 16 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR32
```
public static final String CHAR32
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 32 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR64
```
public static final String CHAR64
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 64 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR128
```
public static final String CHAR128
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 128 characters.
    
    See Also:
    
    Constant Field Values
  - CHAR256
```
public static final String CHAR256
```
    This property provides optimized memory, disk and query performance for string columns. Strings with this property must be no longer than 256 characters.
    
    See Also:
    
    Constant Field Values
  - BOOLEAN
```
public static final String BOOLEAN
```
    This property provides optimized memory and query performance for int columns. Ints with this property must be between 0 and 1(inclusive)
    
    See Also:
    
    Constant Field Values
  - INT8
```
public static final String INT8
```
    This property provides optimized memory and query performance for int columns. Ints with this property must be between -128 and +127 (inclusive)
    
    See Also:
    
    Constant Field Values
  - INT16
```
public static final String INT16
```
    This property provides optimized memory and query performance for int columns. Ints with this property must be between -32768 and +32767 (inclusive)
    
    See Also:
    
    Constant Field Values
  - IPV4
```
public static final String IPV4
```
    This property provides optimized memory, disk and query performance for string columns representing IPv4 addresses (i.e. 192.168.1.1). Strings with this property must be of the form: A.B.C.D where A, B, C and D are in the range of 0-255.
    
    See Also:
    
    Constant Field Values
  - ARRAY
```
public static final String ARRAY
```
    Valid only for 'string' columns. Indicates that this field contains an array. The value type and (optionally) the item count should be specified in parenthesis; e.g., 'array(int, 10)' for a 10-integer array. Both 'array(int)' and 'array(int, -1)' will designate an unlimited-length integer array, though no bounds checking is performed on arrays of any length.
    
    See Also:
    
    Constant Field Values
  - JSON
```
public static final String JSON
```
    Valid only for 'string' columns. Indicates that this field contains values in JSON format.
    
    See Also:
    
    Constant Field Values
  - VECTOR
```
public static final String VECTOR
```
    Valid only for 'bytes' columns. Indicates that this field contains a vector of floats. The length should be specified in parenthesis, e.g., 'vector(1000)'.
    
    See Also:
    
    Constant Field Values
  - WKT
```
public static final String WKT
```
    Valid only for 'string' and 'bytes' columns. Indicates that this field contains geospatial geometry objects in Well-Known Text (WKT) or Well-Known Binary (WKB) format.
    
    See Also:
    
    Constant Field Values
  - PRIMARY_KEY
```
public static final String PRIMARY_KEY
```
    This property indicates that this column will be part of (or the entire) primary key.
    
    See Also:
    
    Constant Field Values
  - SOFT_PRIMARY_KEY
```
public static final String SOFT_PRIMARY_KEY
```
    This property indicates that this column will be part of (or the entire) soft primary key.
    
    See Also:
    
    Constant Field Values
  - SHARD_KEY
```
public static final String SHARD_KEY
```
    This property indicates that this column will be part of (or the entire) shard key.
    
    See Also:
    
    Constant Field Values
  - NULLABLE
```
public static final String NULLABLE
```
    This property indicates that this column is nullable. However, setting this property is insufficient for making the column nullable. The user must declare the type of the column as a union between its regular type and 'null' in the Avro schema for the record type in typeDefinition. For example, if a column is of type integer and is nullable, then the entry for the column in the Avro schema must be: ['int', 'null'].
    The C++, C#, Java, and Python APIs have built-in convenience for bypassing setting the Avro schema by hand. For those languages, one can use this property as usual and not have to worry about the Avro schema for the record.
    
    See Also:
    
    Constant Field Values
  - COMPRESS
```
public static final String COMPRESS
```
    This property indicates that this column should be compressed with the given codec and optional level; e.g., 'compress(snappy)' for Snappy compression and 'compress(zstd(7))' for zstd level 7 compression. This property is primarily used in order to save disk space.
    
    See Also:
    
    Constant Field Values
  - DICT
```
public static final String DICT
```
    This property indicates that this column should be dictionary encoded. It can only be used in conjunction with restricted string (charN), int, long or date columns. Dictionary encoding is best for columns where the cardinality (the number of unique values) is expected to be low. This property can save a large amount of memory.
    
    See Also:
    
    Constant Field Values
  - INIT_WITH_NOW
```
public static final String INIT_WITH_NOW
```
    For 'date', 'time', 'datetime', or 'timestamp' column types, replace empty strings and invalid timestamps with 'NOW()' upon insert.
    
    See Also:
    
    Constant Field Values
  - INIT_WITH_UUID
```
public static final String INIT_WITH_UUID
```
    For 'uuid' type, replace empty strings and invalid UUID values with randomly-generated UUIDs upon insert.
    
    See Also:
    
    Constant Field Values
  - UPDATE_WITH_NOW
```
public static final String UPDATE_WITH_NOW
```
    For 'date', 'time', 'datetime', or 'timestamp' column types, always update the field with 'NOW()' upon any update.
    
    See Also:
    
    Constant Field Values

Class ColumnProperty

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

DATA

TEXT_SEARCH

TIMESTAMP

ULONG

UUID

DECIMAL

DATE

TIME

DATETIME

CHAR1

CHAR2

CHAR4

CHAR8

CHAR16

CHAR32

CHAR64

CHAR128

CHAR256

BOOLEAN

INT8

INT16

IPV4

ARRAY

JSON

VECTOR

WKT

PRIMARY_KEY

SOFT_PRIMARY_KEY

SHARD_KEY

NULLABLE

COMPRESS

DICT

INIT_WITH_NOW

INIT_WITH_UUID

UPDATE_WITH_NOW