CreateTable
CreateTable creates a new table within the database.unsigned __int64 CreateTable ( const CODBPP::Schema *schema, unsigned int *tableID = NULL );
Parameters
| schema | a valid schema definition for the desired table. |
| tableID | on successful creation of a table where the schema.tableID was set to zero, the next allocated ID is written to this return value. |
Return Values
If the method succeeds, the return value is zero else see error codes for more details.Remarks
- Database must be in exculsive mode before this method is called.
- CreateTable is atomic and will be undone if method fails.
- CreateTable checks to see if the given schema is valid, if it is capable of being repaired, it will do it.
- CreateTable is not part of the transaction so there is no need to call CommitTransaction.
Example Use
- C++
#include "ODBPP.h"
CODBPP::Segment index1Segments[] = {{0,(CODBPP::Mode)0}};
CODBPP::Index indexes[] = {{0,CODBPP::B_TREE,1,0,index1Segments}
CODBPP::Field fields[] = {
{CODBPP::UINT32, 0, 4, 0,u"First"},
{CODBPP::FLOAT64,8, 8, 0,u"Second"},
{CODBPP::ASTR, 16,32,0,u"Third"}
};
CODBPP::Schema schema = {0,1,0,0,3,0,u"Table Name",NULL,fields, indexes};
int wmain(int argc, wchar_t* argv[])
{
unsigned __int64 error;
const char16_t *message;
CODBPP database;
if(database.OpenDatabase(u"YourDatabase") == NO_ERROR){
if((error = database.BeginTransaction(CODBPP::EXCLUSIVE)) == NO_ERROR){
if((error = database.CreateTable(&schema)) == NO_ERROR){
...
}
}
if(error && database.GetErrorMessage(&message) == NO_ERROR)
MessageBox(message);
database.EndTransaction();
}
return NO_ERROR;
}Also See
AddTable, CloseTable, OpenTable, RemoveTableListen All
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