Internal functions to be called by database providers when a transaction has been started to keep track of the transaction status of the connection.
Note: this function should not be called if internal_statement_executed has already been called because a statement's execution was necessary to perform the action.
this | |
parent_trans |
name of the parent transaction, or null |
trans_name |
transaction's name, or null |
isol_level |
isolation level. |