Sql-Reference: Number-type literals

Mon, 01 Jan 0001 00:00:00 +0000

OpenText™ Analytics Database supports three types of numbers: integers, numerics, and floats.

Integers are whole numbers less than 2^63 and must be digits.
Numerics are whole numbers larger than 2^63 or that include a decimal point with a precision and a scale. Numerics can contain exponents. Numbers that begin with 0x are hexadecimal numerics.

Numeric-type values can also be generated using casts from character strings. This is a more general syntax. See the Examples section below, as well as Data type coercion operators (CAST).

Syntax

digits
digits.[digits] | [digits].digits
digits e[+-]digits | [digits].digits e[+-]digits | digits.[digits] e[+-]digits

Parameters

digits: One or more numeric characters, 0 through 9
e: Exponent marker

Notes

At least one digit must follow the exponent marker (e), if e is present.
There cannot be any spaces or other characters embedded in the constant.
Leading plus (+) or minus (–) signs are not considered part of the constant; they are unary operators applied to the constant.
In most cases a numeric-type constant is automatically coerced to the most appropriate type depending on context. When necessary, you can force a numeric value to be interpreted as a specific data type by casting it as described in Data type coercion operators (CAST).
Floating point literals are not supported. If you specifically need to specify a float, you can cast as described in Data type coercion operators (CAST).
The database follows the IEEE specification for floating point, including NaN (not a number) and Infinity (Inf).
A NaN is not greater than and at the same time not less than anything, even itself. In other words, comparisons always return false whenever a NaN is involved.
Dividing INTEGERS (x / y) yields a NUMERIC result. You can use the // operator to truncate the result to a whole number.

Examples

The following are examples of number-type literals:

42
3.5
4.
.001
5e2
1.925e-3

Scientific notation:

=> SELECT NUMERIC '1e10';
 ?column?
-------------
 10000000000
(1 row)

BINARY scaling:

=> SELECT NUMERIC '1p10';
 ?column?
----------
     1024
(1 row)
=> SELECT FLOAT 'Infinity';
  ?column?
----------
 Infinity
(1 row)

The following examples illustrated using the / and // operators to divide integers:

=> SELECT 40/25;
 ?column?
----------------------
 1.600000000000000000
(1 row)
=> SELECT 40//25;
 ?column?
----------
        1
(1 row)

Sql-Reference: String literals

Mon, 01 Jan 0001 00:00:00 +0000

String literals are string values surrounded by single or double quotes. Double-quoted strings are subject to the backslash, but single-quoted strings do not require a backslash, except for \' and \\.

You can embed single quotes and backslashes into single-quoted strings. To include other backslash (escape) sequences, such as \t (tab), you must use the double-quoted form.

Precede single-quoted strings with a space between the string and its preceding word, since single quotes are allowed in identifiers.

Sql-Reference: Date/time literals

Mon, 01 Jan 0001 00:00:00 +0000

Date or time literal input must be enclosed in single quotes. Input is accepted in almost any reasonable format, including ISO 8601, SQL-compatible, and traditional POSTGRES.

OpenText™ Analytics Database handles date/time input more flexibly than the SQL standard requires. The exact parsing rules of date/time input and for the recognized text fields including months, days of the week, and time zones are described in Date/time expressions.

OpenText Analytics Database 26.2.x – Literals

Sql-Reference: Number-type literals

Syntax

Parameters

Notes

Examples

See also

Sql-Reference: String literals

See also

Sql-Reference: Date/time literals