Oracle table alias Similar to a column name, you can assign a table name an alias. A table alias is a temporary name for a table in a query. You specify a table alias after the table name either with or without the AS keyword: table_name AS table_alias table_name table_aliasCode la...
CREATEORREPLACEPROCEDURETESTAS--表名N_TABLE_NAME VARCHAR2(32);--逗号数量,用于循环SIGNSINT;--逗号数量最大值,用于判断是否加ANDSI_MAXINT;--主查询别名ALIAS VARCHAR2(16);--副查询别名头F_ALI VARCHAR2(16);--用于存放被查询表数量NUMINT;--当前循环取到的值CURRENT_VALUE VARCHAR2(32);--拼接好的...
merge法--适合与两张表的关联查询MERGEINTOtable_name alias1USING(table|view|sub_query) alias2ON(joincondition)WHENMATCHEDTHENUPDATEtable_nameSETcol1=col_val1WHENNOTMATCHEDTHENINSERT(column_list)VALUES(column_values);--例:mergeintoAccount t1using(select'3'AccountID,'肖文博'AccountNamefromdual) t2on...
Connect to an on-premises Oracle database from Power Query Desktop To make the connection, take the following steps: Select theOracle databaseoption in the connector selection. Specify the Oracle net service name/TNS alias or Easy Connect (Plus) connection string to connect to inServer. Easy ...
KnownRunQueryFilterOperand KnownRunQueryFilterOperator KnownRunQueryOrder KnownRunQueryOrderByField KnownSalesforceSinkWriteBehavior KnownSalesforceSourceReadBehavior KnownSalesforceV2SinkWriteBehavior KnownSapCloudForCustomerSinkWriteBehavior KnownSapHanaAuthenticationType KnownSapHanaPartitionOption KnownSapTablePartition...
1、with table as 相当于建个临时表(用于一个语句中某些中间结果放在临时表空间的SQL语句),Oracle 9i 新增WITH语法,可以将查询中的子查询命名,放到SELECT语句的最前面。 语法就是 with tempname as (select ...) select ... 例子: with t as (select * from emp where depno=10) select...
LOGSTDBY stmt: Create table anyddl.anyobj... LOGSTDBY status: ORA-00955: name is already used by an existing object The initial attempt to apply the DDL actually completed, but failed to be recorded. TheORA-16542error identifies this problem. ...
instance-path/alias/ NSS certificate database directory. instance-path/alias/certmap.conf NSS certificate mapping configuration file. instance-path/bak/ Default data backup directory. Each directory database backup is held in its own file system directory. The name of the backup directory corresponds...
Oracle表别名通过为查询中的表分配名称或代码,用于声明和提高可读性。INSERT with Alias可与INSERT INTO语句一起使用。DSC可迁移含有表别名的INSERT INTO语句。 Blogic操作 输入:INSERT,使用表别名 CREATEORREPLACEFUNCTIONmyfctRETURNVARCHAR2ISresVARCHAR2(200);BEGINres:=100;INSERTINTOemp18RW(RW.empno,RW.ename)SEL...
public static final java.lang.String CONNPOOL_ALIASED_CONNECTION "connpool_alias_connection" public static final java.lang.String CONNPOOL_CONNECTION "connpool_connection" public static final java.lang.String CONNPOOL_INCREMENT "connpool_increment" public static final java.lang.String CONNPOOL_IS_POOL...