A3Data A3Data A3Data B7Data B7Data C4Data C4Data Join Column Hash A3Data B8Data C4Data Join Column Hash 适用情况:适用情况: 两个表的数据量都比较大时 例如 100万 30万 关联策略 Nested Joins This is a special join case. This is the only join th 45、at doesnt always use all of the ...
Examples are EBCDIC, ASCII, or Kanji sets. ERRLOG=filename -e filename Alternate file specification for error messages; produces a duplicate record. fastexport command -r fastexport cmd Signifies the start of a FastExport job; usually a RUN FILE command that specifies the script file. MAXSESS=...
In Azure Synapse, character comparisons are always case sensitive.Functions, stored procedures, triggers, and sequencesWhen migrating a data warehouse from a mature environment like Teradata, you probably need to migrate elements other than simple tables and views. Examples include functions, stored...
Examples of communication networks include a local area network (“LAN”) and a wide area network (“WAN”), e.g., the Internet. The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication ...
As the SQL statement defines, REVENUE is calculated as the sum of (L_EXTENDEDPRICE*(1−L_DISCOUNT)). Note that even though the GROUP BY defines the group key as concatenation of L_ORDERKEY, O_ORDERDATE, O_SHIPPRIORITY, the group key is simplified to L_ORDERKEY since it is already ...
Examples are EBCDIC, ASCII, or Kanji sets. ERRLOG=filename -e filename Alternate file specification for error messages; produces a duplicate record. tpump command -r tpump cmd Signifies the start of a TPump job; usually a RUN FILE command that specifies the script file. MACROS -m Keep ...