"Go" SQL multi-table federated update

SQL Update Multi-Table Federated Update method (1) SQLite Multi-Table Update method

UpdateT1SetCol1=T2.col1 fromtable1 T1Inner JoinTable2 T2 onT1.col2=t2.col2# This is a very simple batch update statement that supports this syntax in SQL Server SQLite but does not support #sqlite in the conversion to the following syntaxUpdateTable1SetCol1=(SelectCol1 fromTable2whereCol2=table1.col2)UpdateTa_jbnt_tzhd_pht_area_xiangSetT1=(SelectSys_xzqhdm.name fromSYS_XZQHDMwhereT2=Sys_xzqhdm.code)

(2) SQL Server Multi-table Update method

#SQL Server Syntax:UPDATE{table_name with(<table_hint_limited> [. .. n])|view_name|rowset_function_limited}SET{column_name={Expression| DEFAULT| NULL}| @variable =Expression| @variable = column =Expression}[,... N]{ { [From {< table_source >} [,... n]][WHERE < search_condition >]}| [WHERE Current of {{[GLOBAL]Cursor_name}|Cursor_variable_name}]}[OPTION (< query_hint > [,... n])] #SQL Server Example:UpdateASetA.gqdltks=B.gqdltks,a.bztks=B.bztks fromLandleveldata A,GDQLPJ bwhereA.geo_code=B.lxqdm

(3) Access database Multi-table Update method

= "update++innerjoin tbarea2 B on   a.objectid=B. FID  Set+ + "=++ "=B.area_ LXDW "; Sqllist. ADD (x);

(4) Oracle Multi-Table Update method

Oracle Syntax:UPDATEUpdatedtableSET(col_name1[, Col_name2 ...])=(SELECTcol_name1,[, Col_name2 ...]  fromSrctable[WHERE where_definition]) Oracel Example:UpdateLandleveldata ASet(A.gqdltks, A.bztks)=(SelectB.gqdltks, B.bztks fromGDQLPJ bwhereA.geo_code=B.LXQDM)

(5) MySQL Multi-Table Update method

UPDATE SET col_name1=[, COL_NAME2=EXPR2 ... ][WHERE where_definition]updateset a.gqdltks = B.gqdltks, a.bztks=where a.geo_code=B.LXQDM

"Go" SQL multi-table federated update