Informix DataBlade API Programmer's Manual DataBlade API Function Descriptions

The mi_column_scale() function obtains the scale of the specified column from a row descriptor.

mi_integer mi_column_scale(row_desc, column_id)

MI_ROW_DESC *row_desc;

mi_integer column_id;

row_desc	is a pointer to the row descriptor of the row that contains the column.
column_id	indicates the column identifier, which specifies the position of the column in the specified row descriptor. Column numbering follows C array-indexing conventions: the first column in the row is at position zero (0).

Valid in Client LIBMI Application?	Valid in User-Defined Routine?
Yes	Yes

The mi_column_scale() function obtains the column scale of column_id in the row descriptor that row_desc references. The scale is an attribute of the data type. The meaning of the scale depends on the associated data type, as the following table shows.

If you call mi_column_scale() on some other data type, the function returns zero (0).

A row descriptor describes the structure of a row or a composite value. You can call either the mi_get_row_desc() or mi_get_row_desc_without_row() function to obtain the row descriptor.

See the description of the following functions: mi_column_id(), mi_column_name(), mi_column_nullable(), mi_column_precision(), mi_column_type_id(), mi_column_typedesc(), mi_get_row_desc(), and mi_get_row_desc_without_row().

For information about row descriptors and column information, see Using a Row Descriptor.