Returns the precision of the indicated column in a result set.
参数
- stmt
Specifies a statement resource containing a result set.
- column
Specifies the column in the result set. This can either be an integer
representing the 0-indexed position of the column, or a string
containing the name of the column.
返回值
Returns an integer containing the precision of the specified column. If the
specified column does not exist in the result set,
db2_field_precision() returns FALSE.