In order to create a table with clob column type, the table has to be created with "ORGANIZE BY ROW"; DROP TABLE m_pi_error; CREATE TABLE m_pi_error ( id INTEGER NOT NULL, customer_id ), twitter_id ), err_msg clob(5M), create_time date, PRIMARY
In the previous blog post you saw that there are three different approaches to representing an inheritance hierarchy and I explained Table per Hierarchy (TPH) as the default mapping strategy in EF Code First. We argued that the disadvantages of TPH m
一.遇到的问题是这样的: [RemoteTestNG] detected TestNG version 6.9.10log4j: Parsing for [root] with value=[DEBUG,D,E,stepLog].log4j: Level token is [DEBUG].log4j: Category root set to DEBUGlog4j: Parsing appender named "D".log4j: Parsing layout options for
此问题的原因是因为表的列名称使用了Oracle声明的关键字,列名起的不好引起的. 如果列很多,又不好确定是哪个列名使用了关键字,以下建议可供参考: select * from v$reserved_words where keyword in( select COLUMN_NAME from all_tab_columns where table_name = 'HP_FFS' and owner='用户名大写' ); 除了与oracle关键字段冲突错误外(select * from v$res
原因:我是使用 CREATE TABLE XXX AS subquery 进行创建的数据表,主要是将相关的数据聚合在一起,然后通过导出为SQL脚本文件,进行导入到新库中,导致部分INSERT INTO语句,因数据库字符集的不一致生成的CREATE TABLE表结构的字段类型长度不一致,从而会插入失败value too large for column "SCHEMA"."TABLE"."COLUMN" (actual: 519, maximum:
1.查询系统关键 select * from v$reserved_words 确认你使用的是否为关键字: select * from v$reserved_words w where w.KEYWORD='LEVEL'; 2.系统关键字需要加双引号 update UT_MENU set "LEVEL"=2 where menuid=57886 如果这条语句在在sqlplus里面执行,则同样会提示ORA-01747错误,可以到sqlplus命令行里面执行就ok.有知道sqlplus怎
Q: How do I see what the character set that a MySQL database, table and column are in? Is there something like SHOW CHARACTER SETFOR mydatabase; and SHOW CHARACTER SETFOR mydatabase.mytable; and SHOW CHARACTER SETFOR mydatabase.mytable.mycolumn; A: H
Unlike in Oracle, sqlserver has an special data type in order by make identity growth. But what about if the number is exceed or approaching the limited ? Yes. there will show an error like : Arithmetic overflow error converting IDENTITY to data type
1.检查sql书写正确性 2.如果sql书写正确,则是由于数据库列名起的不好引起的,名字用到了数据库的关键字. 如果列很多,又不好确定是哪个列名使用了关键字,以下建议可供参考: 我用以下方法定位 select * from v$reserved_words where keyword in( select COLUMN_NAME from all_tab_columns where table_name = '表名大写' and owner='用户名大写' ); 来自为知笔记(Wiz)
一.mysql environment When we create an new database,first We need draw er diagram for somebody to show your idea,but our company have no good authorised tool to design sqlserver ER diagram,so I use mysql graphical tool to design it, after that,you can
