...銷遷移。?makemigrations?,基于模型的修改創(chuàng)建遷移。?sqlmigrate?,展示遷移使用的 SQL 語句。?showmigrations?,列出項目的遷移和遷移的狀態(tài)。你應該將遷移看作是數(shù)據(jù)庫架構的版本控制系統(tǒng)。 ?makemigrations ?負責將模型修改...
http://eska-fuses.cn/django4/django4-2eby3m4p.html...last): django.db.migrations.exceptions.IrreversibleError: Operation <RunSQL sql='DROP TABLE demo_books'> in books.0003_auto is not reversible
http://eska-fuses.cn/django4/django4-8u6n3m4w.html...件列表。實例計算文件校驗碼:[root@localhost ~]# sum insert.sql 00827 12
http://eska-fuses.cn/linuxc/linuxc-4n263m78.html...com.baomidou.mybatisplus.extension.injector.methods? 包下 需要配合Sql注入器使用 AlwaysUpdateSomeColumnByIdint alwaysUpdateSomeColumnById(T entity); insertBatchSomeColumnint insertBatchSomeColumn(List<T> entityList); logicDeleteByIdWithFillint logicDeleteByIdWithFill(T entity);
http://eska-fuses.cn/mybatis_plus/mybatis_plus-tend3mgq.htmlMyBatis-Plus 條件構造器-AbstractWrapper inSql(R column, String inValue) inSql(boolean condition, R column, String inValue) 字段 IN ( sql語句 ) 例: ?inSql("age", "1,2,3,4,5,6")--->age in (1,2,3,4,5,6) ? 例: ?inSql("id", "select id from table where id < 3")--->id in (select ...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-pj2e3mk7.htmlMyBatis-Plus 條件構造器-AbstractWrapper notInSql(R column, String inValue) notInSql(boolean condition, R column, String inValue) 字段 NOT IN ( sql語句 ) 例: ?notInSql("age", "1,2,3,4,5,6")--->age not in (1,2,3,4,5,6) ? 例:? notInSql("id", "select id from table where id < 3")-...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-i74t3mk8.htmlMyBatis-Plus 條件構造器-AbstractWrapper having(String sqlHaving, Object... params) having(boolean condition, String sqlHaving, Object... params) HAVING ( sql語句 ) 例: ?having("sum(age) > 10")--->having sum(age) > 10 ? 例: ?having("sum(age) > {0}", 11)--->having sum(ag...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-vkoc3mkd.htmlMyBatis-Plus 條件構造器-AbstractWrapper exists(String existsSql) exists(boolean condition, String existsSql) 拼接 EXISTS ( sql語句 ) 例: ?exists("select id from table where age = 1")--->exists (select id from table where age = 1)?
http://eska-fuses.cn/mybatis_plus/mybatis_plus-yqls3mkk.htmlMyBatis-Plus 條件構造器-AbstractWrapper notExists(String notExistsSql) notExists(boolean condition, String notExistsSql) 拼接 NOT EXISTS ( sql語句 ) 例: ?notExists("select id from table where age = 1")--->not exists (select id from table where age = 1)?
http://eska-fuses.cn/mybatis_plus/mybatis_plus-zyr63mkl.html...一起使用,用于校驗當前的程序(特別是腳本)執(zhí)行的?SQL?是否符合預期。以下是一個開啟了空跑特性的配置示例:database: default: - link: "mysql:root:12345678@tcp(127.0.0.1:3306)/user" debug: true dryRun: true空跑特性也可以通過命令行參數(shù)...
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...銷遷移。?makemigrations?,基于模型的修改創(chuàng)建遷移。?sqlmigrate?,展示遷移使用的 SQL 語句。?showmigrations?,列出項目的遷移和遷移的狀態(tài)。你應該將遷移看作是數(shù)據(jù)庫架構的版本控制系統(tǒng)。 ?makemigrations ?負責將模型修改...
http://eska-fuses.cn/django4/django4-2eby3m4p.html...last): django.db.migrations.exceptions.IrreversibleError: Operation <RunSQL sql='DROP TABLE demo_books'> in books.0003_auto is not reversible
http://eska-fuses.cn/django4/django4-8u6n3m4w.html...件列表。實例計算文件校驗碼:[root@localhost ~]# sum insert.sql 00827 12
http://eska-fuses.cn/linuxc/linuxc-4n263m78.html...com.baomidou.mybatisplus.extension.injector.methods? 包下 需要配合Sql注入器使用 AlwaysUpdateSomeColumnByIdint alwaysUpdateSomeColumnById(T entity); insertBatchSomeColumnint insertBatchSomeColumn(List<T> entityList); logicDeleteByIdWithFillint logicDeleteByIdWithFill(T entity);
http://eska-fuses.cn/mybatis_plus/mybatis_plus-tend3mgq.htmlMyBatis-Plus 條件構造器-AbstractWrapper inSql(R column, String inValue) inSql(boolean condition, R column, String inValue) 字段 IN ( sql語句 ) 例: ?inSql("age", "1,2,3,4,5,6")--->age in (1,2,3,4,5,6) ? 例: ?inSql("id", "select id from table where id < 3")--->id in (select ...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-pj2e3mk7.htmlMyBatis-Plus 條件構造器-AbstractWrapper notInSql(R column, String inValue) notInSql(boolean condition, R column, String inValue) 字段 NOT IN ( sql語句 ) 例: ?notInSql("age", "1,2,3,4,5,6")--->age not in (1,2,3,4,5,6) ? 例:? notInSql("id", "select id from table where id < 3")-...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-i74t3mk8.htmlMyBatis-Plus 條件構造器-AbstractWrapper having(String sqlHaving, Object... params) having(boolean condition, String sqlHaving, Object... params) HAVING ( sql語句 ) 例: ?having("sum(age) > 10")--->having sum(age) > 10 ? 例: ?having("sum(age) > {0}", 11)--->having sum(ag...
http://eska-fuses.cn/mybatis_plus/mybatis_plus-vkoc3mkd.htmlMyBatis-Plus 條件構造器-AbstractWrapper exists(String existsSql) exists(boolean condition, String existsSql) 拼接 EXISTS ( sql語句 ) 例: ?exists("select id from table where age = 1")--->exists (select id from table where age = 1)?
http://eska-fuses.cn/mybatis_plus/mybatis_plus-yqls3mkk.htmlMyBatis-Plus 條件構造器-AbstractWrapper notExists(String notExistsSql) notExists(boolean condition, String notExistsSql) 拼接 NOT EXISTS ( sql語句 ) 例: ?notExists("select id from table where age = 1")--->not exists (select id from table where age = 1)?
http://eska-fuses.cn/mybatis_plus/mybatis_plus-zyr63mkl.html...一起使用,用于校驗當前的程序(特別是腳本)執(zhí)行的?SQL?是否符合預期。以下是一個開啟了空跑特性的配置示例:database: default: - link: "mysql:root:12345678@tcp(127.0.0.1:3306)/user" debug: true dryRun: true空跑特性也可以通過命令行參數(shù)...
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