With UltraLite, you can perform SQL data manipulation by using the ExecuteStatement method (a member of the PreparedStatement class).
See UltraLite_PreparedStatement class.
UltraLite indicates query parameters using the ? character. For any INSERT, UPDATE, or DELETE statement, each ? is referenced according to its ordinal position in the prepared statement. For example, the first ? is referred to as parameter 1, and the second as parameter 2.
Declare a PreparedStatement.
PreparedStatement * prepStmt; |
Assign a SQL statement to the PreparedStatement object.
prepStmt = conn->PrepareStatement( UL_TEXT("INSERT INTO MyTable(MyColumn) values (?)") ); |
Assign input parameter values for the statement.
The following code shows a string parameter.
prepStmt->SetParameter( 1, UL_TEXT("newValue") ); |
Execute the prepared statement.
The return value indicates the number of rows affected by the statement.
ul_s_long rowsInserted; rowsInserted = prepStmt->ExecuteStatement(); |
Commit the change.
conn->Commit(); |
Declare a PreparedStatement.
PreparedStatement * prepStmt; |
Assign a SQL statement to the PreparedStatement object.
ULValue sqltext( ); prepStmt = conn->PrepareStatement( UL_TEXT("DELETE FROM MyTable WHERE MyColumn = ?") ); |
Assign input parameter values for the statement.
prepStmt->SetParameter( 1, UL_TEXT("deleteValue") ); |
Execute the statement.
ul_s_long rowsDeleted; rowsDeleted = prepStmt->ExecuteStatement(); |
Commit the change.
conn->Commit(); |
Declare a PreparedStatement.
PreparedStatement * prepStmt; |
Assign a statement to the PreparedStatement object.
prepStmt = conn->PrepareStatement( UL_TEXT("UPDATE MyTable SET MyColumn1 = ? WHERE MyColumn1 = ?") ); |
Assign input parameter values for the statement.
prepStmt->SetParameter( 1, UL_TEXT("newValue") ); prepStmt->SetParameter( 2, UL_TEXT("oldValue") ); |
Execute the statement.
ul_s_long rowsUpdated; rowsUpdated = prepStmt->ExecuteStatement(); |
Commit the change.
conn->Commit(); |
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