String to Date and Timestamp
TO_DATE function in PostgreSQL is used to converting strings into dates. Its syntax is
TO_DATE(text, text) and the return type is date.
TO_TIMESTAMP function converts string data into timestamps with timezone. Its syntax is
String to numeric
In PostgreSQL strings can be converted to integer or double using
CAST function or the
:: annotation. Both are equivalent and you can choose whichever you like.
If a column contains money data you should keep in mind that floating point numbers should not be used to handle money due to the potential for rounding errors.
A money value can be cast to numeric without loss of precision. Conversion to other types could potentially lose precision, and must also be done in two stages:
Number::moneyAvoid converting it to float due to potential rounding errors
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