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- 增加 AsTable 多次，可查询分表后的多个子表记录，以 UNION ALL 形式执行；

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28810
2019-09-09 18:30:55 +08:00
parent ebec260d97
commit bcc154ee43
13 changed files with 620 additions and 464 deletions
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9
FreeSql/Interface/Curd/ISelect/ISelect0.cs
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@ -68,7 +68,14 @@ namespace FreeSql
Task<T1> FirstAsync();
/// <summary>
/// 设置表名规则，可用于分库/分表，参数1：实体类型；参数2：默认表名；返回值：新表名；
/// 设置表名规则，可用于分库/分表，参数1：实体类型；参数2：默认表名；返回值：新表名； <para></para>
/// 设置后可查询分表后的多个子表记录，以 UNION ALL 形式执行。 <para></para>
/// 如：select.AsTable((type, oldname) => "table_1").AsTable((type, oldname) => "table_2").AsTable((type, oldname) => "table_3").ToSql(a => a.Id); <para></para>
/// select * from (SELECT a."Id" as1 FROM "table_1" a) ftb <para></para>
/// UNION ALL<para></para>
/// select * from (SELECT a."Id" as1 FROM "table_2" a) ftb <para></para>
/// UNION ALL<para></para>
/// select * from (SELECT a."Id" as1 FROM "table_3" a) ftb
/// </summary>
/// <param name="tableRule"></param>
/// <returns></returns>