UltraLite User's Guide
C++ API Reference
Generated table class
bool Get (
ul_column_num column-index,
value-declaration,
bool* is-null = UL_NULL );
value-declaration:
ul_char * buffer-name, ul_length buffer-length
| p_ul_binary buffer-name, ul_length buffer-length
| DECL_DATETIME & date-value
| { DECL_BIGINT | DECL_UNSIGNED_BIGINT } & bigint-value
| unsigned char & char-value
| double & double-value
| float & float-value
| [ unsigned ] long & integer-value
| [ unsigned ] short & short-value
Gets a value of from a column, specified by index.
column-index The number of the column. The first column in the table has a value of one.
value declaration The arguments required to specify the value depend on the data type. Character and binary data must be mapped into buffers, with the buffer name and length specified in the call. For other data types, a pointer to a variable of the proper type is needed. For character data, the length parameter specifies the length of the C array including the space used for the terminator.
isNULL If a value in a column is NULL, isNull is set to true. In this case, the value argument is not meaningful.
true (1) if successful.
false (0) if unsuccessful.
The following example is part of a switch statement that gets values from rows based on their data type:
switch( tb.GetColumnType( colIndex ) ) {
case tb.S_LONG :
ret = tb.Get( colIndex, longval );
printf( "Long column: %d\n", longval );
break;
...