try{// 执行插入或修改数据的操作}catch(SQLiteConstraintExceptione){// 处理CHECK约束条件失败的异常Log.e(TAG,"CHECK constraint failed: "+e.getMessage());// 显示错误消息给用户Toast.makeText(context,"Invalid data entered.",Toast.LENGTH_SHORT).show();// 回滚事务db.rollback();} 1. 2. 3. 4...
Age integer CHECK(Age>22)); sqlite> .tables Teachers sqlite> INSERT INTO Teachers(Age) VALUES(45); sqlite> INSERT INTO Teachers(Age) VALUES(33); sqlite> INSERT INTO Teachers(Age) VALUES(23); sqlite> INSERT INTO Teachers(Age) VALUES(21); Error: constraint failed...
CONFLICT_ROLLBACK =1 当冲突发生时,立即回滚,结束当前的Transaction,并且会返回SQLITE_CONSTRAINT错误码。如果没有Transaction的话,那么就和ABORT一样 CONFLICT_ABORT = 2 当冲突发生时,不会执行Rollback,而会保留之前的数据。这是默认行为 CONFLICT_FAIL =3 当冲突发生时,命令中断,并且返回SQLITE_CONSTRAINT错误码。...
Age integerCHECK(Age>22));sqlite>.tablesTeacherssqlite>INSERT INTO Teachers(Age) VALUES(45);sqlite>INSERT INTO Teachers(Age) VALUES(33);sqlite>INSERT INTO Teachers(Age) VALUES(23);sqlite>INSERT INTO Teachers(Age) VALUES(21);Error: constraint failedsqlite>...
当冲突发生时,立即回滚,结束当前的Transaction,并且会返回SQLITE_CONSTRAINT错误码。如果没有Transaction的话,那么就和ABORT一样 CONFLICT_ABORT = 2 当冲突发生时,不会执行Rollback,而会保留之前的数据。这是默认行为 CONFLICT_FAIL =3 当冲突发生时,命令中断,并且返回SQLITE_CONSTRAINT错误码。但是之前对数据库修改的...
当触发器程序执行中调用了上述前三个之一的形式时,则执行指定的ON CONFLICT进程(ABORT、FAIL或者ROLLBACK)且终止当前查询,返回一个SQLITE_CONSTRAINT错误并说明错误信息。 当调用RAISE(IGNORE),当前触发器程序的余下部分,触发该触发器的语句和任何之后的触发器程序被忽略并且不恢复对数据库的已有改变。若触发触发器的语...
The column is named in a table or column CHECK constraint not associated with the column being dropped. The column is used in a foreign key constraint. The column is used in the expression of a generated column. The column appears in a trigger or view. 简单翻译一下,SQLite可以直接删除列,...
Error: CHECK constraint failed: teacher 默认值:sex没有插入,默认值为0,由于复合主键的原因,(1235, 'wsy', 20)可以插入 sqlite>INSERT INTO teacher(id, name, age) VALUES (1235, 'wsy', 20); sqlite>SELECT *FROM teacher; id | name | age | sex ...
DropCheckConstraint✔(重新构建) DropColumn✔(重新构建) DropForeignKey✔(重新构建) DropIndex✔ DropPrimaryKey✔(重新构建) DropTable✔ DropUniqueConstraint✔(重新构建) RenameColumn✔ RenameIndex✔(重新构建) RenameTable✔ EnsureSchema✔(无操作) ...
DropCheckConstraint✔ (重建) DropColumn✔ (重建) DropForeignKey✔ (重建) DropIndex✔ DropPrimaryKey✔ (重建) DropTable✔ DropUniqueConstraint✔ (重建) RenameColumn✔ RenameIndex✔ (重建) RenameTable✔ EnsureSchema✔ (不操作) ...