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Data types
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21.6 Data types
This chapter describes the most important data types in PostgreSQL and MS SQL. This
information is provided without any guarantees of being correct.
Advice for the selection of a numerical data type:
▪
For whole numbers, the "int" type is the most common choice, since it provides the
best balance between range, memory size and efficiency. The "smallint" type is
normally only used when storage space is limited. The "bigint" type should only be
used when the "int" range is not sufficient, since the latter is faster.
▪
The "numeric" type can be recommended for saving monetary values and other
values where accuracy is required. The "numeric" type is very slow in compar ison to
the floating point types. The "money" type is outdated.
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