方法一、使用add constraint 方法添加主键约束 alter table 表名 add constraint 主键名 primary key (列名1,列名2,...) 方法二、使用索引创建主键 (和方法一没有区别,可以将方法一理解为省略了using index) alter table 表名 add constraint 主键名 primary key (列名1,列名2,...) using index [index_name...
oracle增加主鍵也不會了 Oracle cycker> alter table robincui add primary key PK_TEST (TEST); alter table robincui add primary key PK_TEST (TEST) * ERROR at line 1: ORA-00906: missing left parenthesis cycker> alter table robincui add primary key (TEST); Table altered. 來自“ ITPUB部落格...
1.语法:ALTER TABLE 表名 ADD CONSTRAINT 主键名 PRIMARY KEY 表名(主键字段); 3.添加外键 1.语法:ALTER TABLE 表名 ADD CONNSTRAINT 外键名 FOREIGN KEY(外键字段) REFERENCES 关联表名(关联字段); 4.插入单(多)条数据记录(和SQL Server相同,但是不能用select多列添加数据) 1.INSERT INTO 表名[(字段名...
00 for DATETIME. This is a non-standard behavior that Oracle recommends you not rely on. Adding a primary key using ALGORITHM=INPLACE is only permitted when the SQL_MODE setting includes the strict_trans_tables or strict_all_tables flags; when the SQL_MODE setting is strict, ALGORITHM=IN...
Description Adding primary key column in older versions of Oracle and in 12c Area SQL General / DDL Contributor Andrew Clarke Created Tuesday December 26, 2017 Statement 1 create table t23 (EMP_NAME varchar2(20), EMP_POS varchar2(20), SALARY number, GENDER varchar2(1)) Table created...
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Oracle,版本 8 及更高版本Oracle Provider for OLE DB任意OraOLEDB.Oracle用于 Oracle 数据库的别名 Access/JetMicrosoft OLE DB Provider for Jet任意Microsoft.Jet.OLEDB.4.0Jet 数据库文件的完整路径 ODBC 数据源Microsoft OLE DB Provider for ODBC任意MSDASQLODBC 数据源的系统 DSN ...
Excel Oracle connector for direct data import and easy bulk editing via Excel Add-in. External modifications become effortless with our integration tool.
Dropping a constraint by specifyingCONSTRAINT constraint_namein thedrop_constraint_clauseclause is supported. Only one constraint can be dropped at a time. Sample code: ALTERTABLETDROPCONSTRAINTCST; Unsupported operations Dropping the primary key or unique key is not supported. An error will be return...
EXEC ('CREATETABLESchemaName.TableName(col1intnotnullCONSTRAINTPK_col1 PRIMARYKEYCLUSTERED (col1) )') at LinkedServerName; EXEC ('INSERTINTOSchemaName.TableNameVALUES(1),(2),(3)') at LinkedServerName; 使用四部分名稱查詢資料: SQL SELECT*FROMLinkedServerName.DatabaseName.SchemaName.TableName;...