/** * call-seq: * getColumnPrecision(col) * * Returns the precision of the specified column. Precision is the total * number of digits in a number. eg: 123.45 has a precision of 5. For * non-numeric types, it's the number of characters in the string. "col" * may be specified as the column name or number. */ static VALUE sqlrcur_getColumnPrecision(VALUE self, VALUE col) {