unique主题的文章列表，还有unique的技术要点_第4页

ORA-02273: this unique/primary key is referenced by some foreign keys

文档解释ORA-02273:thisunique/primarykeyisreferencedbysomeforeignkeysCause:Self-evident.Action:Removeallreferencestothekeybeforethekeyistobedropped.ORA-02273错误由Oracl...

IT技术学习 ·2023-07-08

ORA-16184: DB_UNIQUE_NAME string hashes to the same value as DB_UNIQUE_NAME string

文档解释ORA-16184:DB_UNIQUE_NAMEstringhashestothesamevalueasDB_UNIQUE_NAMEstringCause:TheinternalhashvaluegeneratedforoneDB_UNIQUE_NAMEcollidedwiththehashvalueofano...

IT技术学习 ·2023-07-08

ORA-02270: no matching unique or primary key for this column-list

文档解释ORA-02270:nomatchinguniqueorprimarykeyforthiscolumn-listCause:AREFERENCESclauseinaCREATE/ALTERTABLEstatementgivesacolumn-listforwhichthereisnomatchingunique...

IT技术学习 ·2023-07-08

ORA-02429: cannot drop index used for enforcement of unique/primary key

文档解释ORA-02429:cannotdropindexusedforenforcementofunique/primarykeyCause:userattemptedtodropanindexthatisbeingusedastheenforcementmechanismforuniqueorprimarykey....

IT技术学习 ·2023-07-08

ORA-55622: DML, ALTER and CREATE UNIQUE INDEX operations are not allowed on table “string”.”string”

文档解释ORA-55622:DML,ALTERandCREATEUNIQUEINDEXoperationsarenotallowedontable“string”.”string”Cause:Anattemptwasmadetowritetooralterorcreate...

IT技术学习 ·2023-07-08

ORA-01761: DML operation does not map to a unique table in the join

文档解释ORA-01761:DMLoperationdoesnotmaptoauniquetableinthejoinCause:Theprimarytableisthebasetableagainstwhichtheupdate,insertordeleteoperationisfinallybeingdone.Fo...

IT技术学习 ·2023-07-08

ORA-39793: Attribute “string” is not unique within the hierarchy being loaded.

文档解释ORA-39793:Attribute“string”isnotuniquewithinthehierarchybeingloaded.Cause:Theattributewasdefinedinmultiplelinesofdescentinthehierarchybeingloade...

IT技术学习 ·2023-07-06

ORA-01715: UNIQUE may not be used with a cluster index

文档解释ORA-01715:UNIQUEmaynotbeusedwithaclusterindexCause:AnattemptwasmadetocreateaclusterindexwiththeUNIQUEattribute.Action:RemoveUNIQUEfromtheCREATEINDEXstatemen...

IT技术学习 ·2023-07-05

MySQL Error number: MY-010482; Symbol: ER_NDB_OOM_IN_FIX_UNIQUE_INDEX_ATTR_ORDER; SQLSTATE: HY000

文档解释Errornumber:MY-010482;Symbol:ER_NDB_OOM_IN_FIX_UNIQUE_INDEX_ATTR_ORDER;SQLSTATE:HY000Message:fix_unique_index_attr_order:my_malloc(%u)failure错误说明MY-010482ER...

IT技术学习 ·2023-06-27

MySQL Error number: MY-010905; Symbol: ER_FAILED_TO_GENERATE_UNIQUE_LOGFILE; SQLSTATE: HY000

文档解释Errornumber:MY-010905;Symbol:ER_FAILED_TO_GENERATE_UNIQUE_LOGFILE;SQLSTATE:HY000Message:Can’tgenerateauniquelog-filename%s.(1-999).错误说明：MY-010905ER_FA...

IT技术学习 ·2023-06-25

MySQL Error number: 3728; Symbol: ER_SPATIAL_UNIQUE_INDEX; SQLSTATE: HY000

文档解释Errornumber:3728;Symbol:ER_SPATIAL_UNIQUE_INDEX;SQLSTATE:HY000Message:Spatialindexescan’tbeprimaryoruniqueindexes.错误说明：ER_SPATIAL_UNIQUE_INDEX是MySQL错误...

IT技术学习 ·2023-06-17

sql server将字符串转换为 uniqueidentifier 时失败

https://www.cnblogs.com/chyg/p/5404591.html...

代码星球 ·2021-02-17

java生成32位的UUID通用唯一识别码 (Universally Unique Identifier)

entity.setId(UUIDUtils.getUUID());...

代码星球 ·2021-02-17

LeetCode: 63. Unique Paths II（Medium）

1.原题链接https://leetcode.com/problems/unique-paths-ii/description/...

代码星球 ·2021-02-12

LeetCode: 62. Unique Paths（Medium）

1.原题链接https://leetcode.com/problems/unique-paths/description/2.题目要求给定一个m*n的棋盘，从左上角的格子开始移动，每次只能向右或向下移动一格，直至右下角的格子。返回所有不同路径的总数。注意：m和n都不超过1003.解题思路 ...

代码星球 ·2021-02-12