+static bool
+log_after_parse(List *raw_parsetree_list, const char *query_string,
+ char **prepare_string)
+{
+ ListCell *parsetree_item;
+ bool log_this_statement = (log_statement == LOGSTMT_ALL);
+
+ *prepare_string = NULL;
+
+ /* Check if we need to log the statement, and get prepare_string. */
+ foreach(parsetree_item, raw_parsetree_list)
+ {
+ Node *parsetree = (Node *) lfirst(parsetree_item);
+ const char *commandTag;
+
+ if (IsA(parsetree, ExplainStmt) &&
+ ((ExplainStmt *) parsetree)->analyze)
+ parsetree = (Node *) (((ExplainStmt *) parsetree)->query);
+
+ if (IsA(parsetree, PrepareStmt))
+ parsetree = (Node *) (((PrepareStmt *) parsetree)->query);
+
+ if (IsA(parsetree, SelectStmt) &&
+ ((SelectStmt *) parsetree)->into == NULL)
+ continue; /* optimization for frequent command */
+
+ if (log_statement == LOGSTMT_MOD &&
+ (IsA(parsetree, InsertStmt) ||
+ IsA(parsetree, UpdateStmt) ||
+ IsA(parsetree, DeleteStmt) ||
+ IsA(parsetree, TruncateStmt) ||
+ (IsA(parsetree, CopyStmt) &&
+ ((CopyStmt *) parsetree)->is_from))) /* COPY FROM */
+ log_this_statement = true;
+
+ commandTag = CreateCommandTag(parsetree);
+ if ((log_statement == LOGSTMT_MOD ||
+ log_statement == LOGSTMT_DDL) &&
+ (strncmp(commandTag, "CREATE ", strlen("CREATE ")) == 0 ||
+ IsA(parsetree, SelectStmt) || /* SELECT INTO, CREATE AS */
+ strncmp(commandTag, "ALTER ", strlen("ALTER ")) == 0 ||
+ strncmp(commandTag, "DROP ", strlen("DROP ")) == 0 ||
+ IsA(parsetree, GrantStmt) || /* GRANT or REVOKE */
+ IsA(parsetree, CommentStmt)))
+ log_this_statement = true;
+
+ /*
+ * For the first EXECUTE we find, record the client statement
+ * used by the PREPARE.
+ */
+ if (IsA(parsetree, ExecuteStmt))
+ {
+ ExecuteStmt *stmt = (ExecuteStmt *) parsetree;
+ PreparedStatement *entry;
+
+ if ((entry = FetchPreparedStatement(stmt->name, false)) != NULL &&
+ entry->query_string)
+ {
+ *prepare_string = palloc(strlen(entry->query_string) +
+ strlen(" [client PREPARE: %s]") - 1);
+ sprintf(*prepare_string, " [client PREPARE: %s]",
+ entry->query_string);
+ }
+ }
+ }
+
+ if (log_this_statement)
+ {
+ ereport(LOG,
+ (errmsg("statement: %s%s", query_string,
+ *prepare_string ? *prepare_string : "")));
+ return true;
+ }
+ else
+ return false;
+}
+
+