Function dsqlFindDbKey

src/dsql/StmtNodes.cpp:9817–9839

Find dbkey for named relation in statement's saved dbkeys.

// Find dbkey for named relation in statement's saved dbkeys.
static dsql_par* dsqlFindDbKey(const DsqlDmlStatement* statement, const RelationSourceNode* relation_name)
{
	DEV_BLKCHK(relation_name, dsql_type_nod);

	const dsql_msg* message = statement->getReceiveMsg();
	dsql_par* candidate = NULL;
	const MetaName& relName = relation_name->dsqlName;

	for (FB_SIZE_T i = 0; i < message->msg_parameters.getCount(); ++i)
	{
		dsql_par* parameter = message->msg_parameters[i];

		if (parameter->par_dbkey_relname.hasData() && parameter->par_dbkey_relname == relName)
		{
			if (candidate)
				return NULL;

			candidate = parameter;
		}
	}

	return candidate;
}

// Find record version for relation in statement's saved record version.
static dsql_par* dsqlFindRecordVersion(const DsqlDmlStatement* statement, const RelationSourceNode* relation_name)