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Stored procedures
Declares a transaction savepoint. This allows you to roll the transaction back to this savepoint later (HTransactionRollbackToSavepoint).
Example
MyConnection is Connection
 
// Start transactions
HTransactionStart(MyConnection)
 
// Actions A
 
// Declare a savepoint
HTransactionSavepoint(MyConnection, "MySavepoint")
 
// Actions B
 
// Undo all actions after the declaration of MySavepoint
HTransactionRollbackToSavepoint(MyConnection, "MySavepoint")
 
// Actions C
 
// Declare a savepoint
HTransactionSavepoint(MyConnection, "MySavepoint2")
 
// Actions D
 
// Validate (commit) transactions
// Actions A, C and D are taken into account,
// but not B actions because they are between HTransactionSavepoint()
// and HTransactionRollbackToSavepoint
 
HTransactionEnd(MyConnection)
 
// MySavepoint2 is disabled
Syntax
<Result> = HTransactionSavepoint([<Connection>, ] <Savepoint name>)
<Result>: Boolean
  • True if the savepoint has been created,
  • False if a problem occurs. HErrorInfo returns more details about the error.
<Connection>: Character string or Connection variable
Connection to an HFSQL server. This connection corresponds to: If this parameter is not specified, the current connection is used.
<Savepoint name>: Character string
Savepoint name.
Remark: The name of the savepoint cannot start with "#".
Remarks
  • This function must be used in a transaction.
  • The corresponding SQL statement can also be used: "SAVEPOINT identifier".
  • This function is not available:
    • on HFSQL files in cluster mode,
    • with files handled via a Native Connector.
Business / UI classification: Business Logic
Component: wd280hf.dll
Minimum version required
  • Version 27
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