Data type-hinting is the means by which SchemafreeSQL can determine the data types of your attributes at run-time.
Data type-hints are specified with the single character (the type) followed by a colon (e.g. 's:' which stands for 'string').
Within SFQL, a leading dollar sign '$' before the type-hint (e.g. 'SELECT $s:name...') differentiates a SchemafreeSQL attribute from other SQL grammar.
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64 bit integer
64 bit floating-point number
Decimal number up to 13 digits to the left and 5 digits to the right of the decimal.
binary large object
object-type under which any of the above primitive attributes can reside.