有点复杂的sql语句
SELECT
xmlgroup(
SITE_NAME AS siteName,
SITE_NAME_CH AS siteNameCH,
SITE_URL AS siteUrl,
QUERY_VPN AS ws_queryVPNExpiration,
UPDATE_CLIENT_CONF AS ws_updateClientConfig,
COLLECT_UCD AS ws_collectUCDData,
QUERY_DOMAIN AS ws_canUseDomainPwd
OPTION ROW "site" ROOT "VPNSites")
INTO siteXml
FROM T_CLIENT_GATEWAY TCG WHERE TCG.SITE_NAME!='Other...';
一个存储过程里面的SQL语句,看不是很明白,求解释啊(DB2的存储过程,现在要转成oracle的)