sql查询 分级查询 SHAPE {SELECt * FROM `Customers`} AS Customers

strSh = "SHAPE {SELECt * FROM `Customers`} AS Customers " & _
"APPEND ({SELECt * FROM `Orders`} AS Orders RELATE " & _
"CustomerID TO CustomerID) AS Orders"
这个句子谁能帮我解释一下怎么用的？

PrintPreviewDialog pPDlg;
exec_prefix='NONE'PACKAGE='libevent'
PACKAGE_BUGREPORT=''
PACKAGE_NAME=''
PACKAGE_STRING=''
PACKAGE_TARNAME=''
PACKAGE_URL=''
PACKAGE_VERSION=''
PATH_SEPARATOR=':'

我不会~~~但还是要微笑~~~：）