uniquekey constraint requires that every value in a column or set of columns beunique. No rows of a table may have duplicate values in a column (the uniquekey) or set of columns (the composite unique key) with a unique key constraint. Note: Because the database enforces a unique constra...
uniquekey constraint requires that every value in a column or set of columns beunique. No rows of a table may have duplicate values in a column (the uniquekey) or set of columns (the composite unique key) with a unique key constraint. Note: Theterm key refers only to the columns define...
uniquekey constraint requires that every value in a column or set of columns beunique. No rows of a table may have duplicate values in a column (the uniquekey) or set of columns (the composite unique key) with a unique key constraint. Note: Theterm key refers only to the columns define...
开启ALL 级别的补偿日志的方式如下: --方式一:开启 DataBase 级别 ALTER DATABASE ADD SUPPLEMENTAL LOG DATA (ALL) COLUMNS; --方式二:开启 Table 级别 ALTER TABLE table_name ADD SUPPLEMENTAL LOG DATA (ALL) COLUMNS; 单击 下一步 。在 迁移选项 步骤,配置各项参数。全量...
java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (USR_JXZX_DSJKF_MODEL.SYS_C001362707) violated 主键不一致,须联系数据中心修改 经DataX智能分析,该任务最可能的错误原因是: com.alibaba.datax.common.exception.DataXException: Code:[Framework-14], Description:[DataX传输脏数据...
constraint_name TEXT 约束的名称。 table_name TEXT 约束所属表的名称。 column_name TEXT 约束中引用的列的名称。 position SMALLINT 列在对象定义中的位置。 3.8.3.10 dba_ind_columns 描述了数据库中所有表和集群的所有索引的列。它的列与 ALL_IND_COLUMNS 中的列相同。 名称类型说明 index_owner name 索引...
/*常用语法*/CREATE[UNIQUE | BITMAP]INDEX[schema.]indexnameON[schema.]tablename(column,….);DROPINDEXindexname; 3. CONSTRAINT 约束 官方描述:Use a constraint to define an integrity constraint—a rule that restricts the values in a database. ...
PGXC_INSTR_UNIQUE_SQL PGXC_LOCK_CONFLICTS PGXC_LWLOCKS PGXC_MEMORY_DEBUG_INFO PGXC_NODE_ENV PGXC_NODE_STAT_RESET_TIME PGXC_OBS_IO_SCHEDULER_STATS PGXC_OBS_IO_SCHEDULER_PERIODIC_STATS PGXC_OS_RUN_INFO PGXC_OS_THREADS PGXC_POOLER_STATUS PGXC_PREPARED_XACTS PGXC_REDO_STAT PGX...
Column_name, data_type, CONSTRAINT, constraint_name, UNIQUE If the unique constraint protects multiple data columns, then the unique constraint is added as a table constraint. Syntax as follows: CONSTRAINT, constraint_name (column), UNIQUE, USING, INDEX, TABLESPACE (tablespace_name), STORA...
SELECT TABLE_NAME, WM_CONCAT(DATA_TYPE) AS DATA_TYPE FROM ( SELECT DISTINCT TABLE_NAME, DATA_TYPE FROM ALL_TAB_COLUMNS WHERE OWNER = 'PORTAL' --待同步模式的模式名 AND TABLE_NAME NOT IN( SELECT TABLE_NAME FROM ALL_CONSTRAINTS WHERE CONSTRAINT_TYPE = 'P' AND OWNER = 'PORTAL' --待同...