Can I use… smallint (column type)

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  1. Accepts character strings (generously cast or not statically typed)
  2. Use int64

The SQL type smallint is typically no shorter than a 16 big signed integer (-32768 to 32767).

CREATE TABLE table_name (
   column_name SMALLINT

Note that the SQL language has no unsigned modifier (see: domain, check).

  • Smallint in other places: cast target.

  • Other integer types: integer/int, bigint

  • Restricting the value range (e.g. unsigned): domain, check

  • SQL types for decimal numbers: numeric, decimal, decfloat

  • Numeric types with approximate arithmetic: float, real, double precision

  • Product specific integer types: tinyint, mediumint, int2, int4, int8, int64, unsigned, signed

Normative References

The type smallint is defined in ISO/IEC 9075:2016-2 (E011-01, “INTEGER and SMALLINT data types (including all spellings)”) with an implementation defined precision.0 The corresponding data type of the C programming language is short,1 which corresponds to the above mentioned value range.2

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  1. ISO/IEC 9075:2016, Part 2, §6.1 <data type>, Syntax Rule 28

  2. ISO/IEC 9075:2016, Part 2, §13.5 Data type correspondences

  3. ISO/IEC 9899:2017, § Sizes of integer types <limits.h>

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