November 2010
Intermediate to advanced
204 pages
4h 23m
English
Content preview from SQL Pocket Guide, 3rd Edition
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Numeric Conversions: PostgreSQL
You can convert between numeric values and their string
representations using the following functions, where
number can be any numeric type:
TO_CHAR(number,format) TO_NUMBER(string,format)
PostgreSQL’s number format elements closely follow Oracle’s. They are listed in Table 1-10.
Table 1-10. PostgreSQL’s numeric format elements
Element | Description |
|---|---|
| Prefix: dollar sign
( |
| Location of comma.
Consider |
| Location of period.
Consider |
| Significant digit. Leading zeros. |
| Significant digit. Leading blanks. |
| Prefix: returns zero as blanks. |
| Location of ISO currency symbol. |
| Location of decimal point. |
| Suffix: use scientific notation. |
| Prefix: removes leading/trailing blanks. |
| Location of group separator. |
| Location of local currency symbol. |
| Suffix: trailing minus
( |
| Suffix: angle brackets
( |
| Roman numerals, upper- or lowercase. Output-only. |
| Prefix: leading plus
( |
| Prefix: use minimum
number of characters (text-minimum). Output-only. |
| Specifies location of
Euro symbol ( |
| Multiplies the number to
the left of the |
| Use hexadecimal notation.
Output-only. Precede with |
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