#Generated

MySQL Error number: 3772; Symbol: ER_DEFAULT_VAL_GENERATED_VARIABLES; SQLSTATE: HY000

文档解释Errornumber:3772;Symbol:ER_DEFAULT_VAL_GENERATED_VARIABLES;SQLSTATE:HY000Message:Defaultvalueexpressionofcolumn‘%s’cannotreferuserorsystemvariab...
IT技术学习 ·2023-06-20

MySQL Error number: 3765; Symbol: ER_GENERATED_COLUMN_VARIABLES; SQLSTATE: HY000

文档解释Errornumber:3765;Symbol:ER_GENERATED_COLUMN_VARIABLES;SQLSTATE:HY000Message:Expressionofgeneratedcolumn‘%s’cannotreferuserorsystemvariables.ER_G...
IT技术学习 ·2023-06-20

MySQL Error number: 3767; Symbol: ER_DEFAULT_VAL_GENERATED_NON_PRIOR; SQLSTATE: HY000

文档解释Errornumber:3767;Symbol:ER_DEFAULT_VAL_GENERATED_NON_PRIOR;SQLSTATE:HY000Message:Defaultvalueexpressionofcolumn‘%s’cannotrefertoacolumndefinedaf...
IT技术学习 ·2023-06-19

MySQL Error number: 3105; Symbol: ER_NON_DEFAULT_VALUE_FOR_GENERATED_COLUMN; SQLSTATE: HY000

文档解释Errornumber:3105;Symbol:ER_NON_DEFAULT_VALUE_FOR_GENERATED_COLUMN;SQLSTATE:HY000Message:Thevaluespecifiedforgeneratedcolumn‘%s’intable‘%s&...
IT技术学习 ·2023-06-19

MySQL Error number: 3771; Symbol: ER_DEFAULT_VAL_GENERATED_ROW_VALUE; SQLSTATE: HY000

文档解释Errornumber:3771;Symbol:ER_DEFAULT_VAL_GENERATED_ROW_VALUE;SQLSTATE:HY000Message:Defaultvalueexpressionofcolumn‘%s’cannotrefertoarowvalue.错误说明:E...
IT技术学习 ·2023-06-19

MySQL Error number: 3106; Symbol: ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN; SQLSTATE: HY000

文档解释Errornumber:3106;Symbol:ER_UNSUPPORTED_ACTION_ON_GENERATED_COLUMN;SQLSTATE:HY000Message:‘%s’isnotsupportedforgeneratedcolumns.ErrorNumber:3106;S...
IT技术学习 ·2023-06-19

MySQL Error number: 3773; Symbol: ER_DEFAULT_AS_VAL_GENERATED; SQLSTATE: HY000

文档解释Errornumber:3773;Symbol:ER_DEFAULT_AS_VAL_GENERATED;SQLSTATE:HY000Message:DEFAULTfunctioncannotbeusedwithdefaultvalueexpressions等错误说明:ER_DEFAULT_AS_VAL_GENE...
IT技术学习 ·2023-06-17

MySQL Error number: MY-013843; Symbol: ER_PERSISTED_VARIABLES_MASTER_KEY_CANNOT_BE_GENERATED; SQLSTATE: HY000

文档解释Errornumber:MY-013843;Symbol:ER_PERSISTED_VARIABLES_MASTER_KEY_CANNOT_BE_GENERATED;SQLSTATE:HY000Message:Anewmasterkey%scouldnotbegenerated错误编号:MY-013843;符号...

MySQL Error number: 3768; Symbol: ER_DEFAULT_VAL_GENERATED_REF_AUTO_INC; SQLSTATE: HY000

文档解释Errornumber:3768;Symbol:ER_DEFAULT_VAL_GENERATED_REF_AUTO_INC;SQLSTATE:HY000Message:Defaultvalueexpressionofcolumn‘%s’cannotrefertoanauto-increm...
IT技术学习 ·2023-06-17

Mybatis抛出:Cannot obtain primary key information from the database, generated objects may be incomplete

使用mybatisgenerator生成pojo、dao、mapper时,可能会遇到Cannotobtainprimarykeyinformationfromthedatabase,generatedobjectsmaybeincomplete无法生成主键相关方法具体详细解决方案有人已经提出了,很长,https://b...

mybatis的<if>标签,<foreach>标签,<collection>标签,<association>标签以及useGeneratedKeys用法

1.判断非空或不等于<iftest="assessTypes!=nullandassessTypes!=''">ANDFIND_IN_SET(t1.assess_type,#{assessTypes})</if>2.判断等于某个固定字符<iftest='rankWay=="byAssess...

吴裕雄--天生自然轻量级JAVA EE企业应用开发Struts2Sping4Hibernate整合开发学习笔记:Hibernate指定generated属性

<?xmlversion="1.0"encoding="GBK"?><projectname="hibernate"basedir="."default=""><propertyname="src"value="src"/><propertyname="dest"value="...

Entity Framework 数据生成选项DatabaseGenerated

在EF中,我们建立数据模型的时候,可以给属性配置数据生成选项DatabaseGenerated,它后有三个枚举值:Identity、None和Computed。Identity:自增长None:不处理Computed:表示这一列是计算列。在EF中,如果主键是int类型,CodeFirst生成数据库的时候会自动设置该列为...

mysql虚拟列(Generated Columns)及JSON字段类型的使用

mysql5.7中有很多新的特性,但平时可能很少用到,这里列举2个实用的功能:虚拟列及json字段类型一、先创建一个测试表:droptableifexistst_people;CREATETABLEt_people(`id`INT(11)NOTNULLAUTO_INCREMENT,`name`varchar(50)NO...
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