Oracle SOA Suite - Version 11.1.1.6.0 to 11.1.1.7.0 [Release 11gR1]: java.sql.SQLIntegrityConstraintViolationException: ORA-00001: unique constraint (<prefix>_SOAINF
Like the primary key constraint, the unique constraint automatically creates a unique index with the same name as the constraint. By default, the index will be nonclustered. SQL uses that index to enforce the uniqueness of the column or combination of columns. 和主键约束一样,唯一性约束自动创建...
A UNIQUE index creates a constraint such that all values in the index must be distinct. An error occurs if you try to add a new row with a key value that matches an existing row. If you specify a prefix value for a column in a UNIQUE index, the column values must be unique within ...
{ "plan_prefix": [ ] /* planprefix/, "table" "`tb_item`", "bestaccess": { "considered_paths": [ "rows_to_scan": 3, "accesstype "range", "range": { "used_index "PRIMARY" } /* range */, "resultingrows": 3, "cost...
(`id`),UNIQUEKEY`unique_user_username`(`username`))ENGINE=InnoDBDEFAULTCHARSET=utf8;CREATETABLE`user_role`(`id`int(11)NOTNULLauto_increment,`user_id`varchar(32)DEFAULTNULL,`role_id`varchar(32)DEFAULTNULL,PRIMARYKEY(`id`),KEY`fk_ur_user_id`(`user_id`),KEY`fk_ur_role_id`(`...
CONSTRAINT, CONSTRAINTS, CONSTRAINT_CATALOG, CONSTRAINT_NAME, CONSTRAINT_SCHEMA, CONSTRUCTOR, CONTAINS, CONTINUE, CONVERT, CORR, CORRESPONDING, COUNT, COVAR_POP, COVAR_SAMP, CREATE, CROSS, CUBE, CUME_DIST, CURRENT, CURRENT_CATALOG, CURRENT_DATE, CURRENT_DEFAULT_TRANSFORM_GROUP, CURRENT_PATH, CURRENT...
create table 命令不仅用来定义关系表,还可以包括完整性约束语句,除主码约束外,还有许多其他可以包括在create table命令中的约束,允许的完整性约束包括:not null 、unique、check。 4.2 not null 约束 not null 声明禁止在该属性上插入控制,任何可能导致向一个声明为not null 的属性插入空值的数据库修改都会产生错误...
(`rec_id`), constraint `fk_record_stu_id` foreign key (`stu_id`) references `tb_student` (`stu_id`), constraint `fk_record_cou_id` foreign key (`cou_id`) references `tb_course` (`cou_id`), constraint `uk_record_stu_cou` unique (`stu_id`, `cou_id`) ) engine=innodb ...
%ROUTINE后面跟着用单引号括起来的文本字符串。 例如,%ROUTINE 'myname'在名为myname1、myname2等的例程中生成代码。 不能从%ROUTINE调用用户定义的(“外部”)函数。 一个表定义只能有一个%ROUTINE关键字; 指定多个会导致SQLCODE -85错误。 在Studio中,例程名称前缀显示为SqlRoutinePrefix值。
DICTIONARY PREFIX WINDOW DIAGNOSTICS PREORDER WITHIN DISCONNECT PREPARE WORK DOMAIN PERCENT_RANK WRITE DYNAMIC PERCENTILE_CONT XMLAGG EACH PERCENTILE_DISC XMLATTRIBUTES ELEMENT POSITION_REGEX XMLBINARY END-EXEC PRESERVE XMLCAST EQUALS PRIOR XMLCOMMENT EVERY PRIVILEGES XMLCONCAT EXCEPTION RANGE ...