- 优化 RereadSql 支持表的其他字段使用；#1655

Author: 2881099

Examples/base_entity/Program.cs

@@ -600,6 +600,21 @@ static void Main(string[] args)
             BaseEntity.Initialization(fsql, () => _asyncUow.Value);
             #endregion
 
+            var x01sql01 = fsql.Select<Main1>()
+                .Include(a => a.Test1)
+                .Include(a => a.Test2)
+                .Include(a => a.Test3)
+                .ToSql();
+
+            var txxx01 = fsql.Select<User1>()
+                .WhereDynamicFilter(new DynamicFilterInfo
+                {
+                    Field = nameof(User1.CreateTime),
+                    Operator = DynamicFilterOperator.DateRange,
+                    Value = $"{DateTime.MinValue.ToString("yyyy-MM-dd")},{DateTime.MinValue.ToString("yyyy-MM-dd")}"
+                })
+                .ToSql();
+
             var updatejoin031sql = fsql.Update<User1>()
                 .Join<UserGroup>(fsql.Select<UserGroup>().Where(a => a.GroupName == "xxx"), (a, b) => a.GroupId == b.Id)
                 .AsTable("t1", null)
@@ -2950,4 +2965,30 @@ public class B11
     public int Id { get; set; }
     public string Name { get; set; }
     public A11 a { get; set; }
+}
+public class Main1
+{
+    public long Id { get; set; }
+
+    public long Test1Id { get; set; }
+
+    public long Test2Id { get; set; }
+
+    public long Test3Id { get; set; }
+
+    public virtual Test2 Test1 { get; set; }
+
+    public virtual Test2 Test2 { get; set; }
+
+    public virtual Test2 Test3 { get; set; }
+}
+
+public class Test2
+{
+    public long Id { get; set; }
+
+    [Column(RereadSql = "IIF({IsEnabled} = 1, {0}, {0} + '-已停用')")]
+    public string ItemName { get; set; }
+
+    public bool IsEnabled { get; set; }
 }

FreeSql/DataAnnotations/ColumnAttribute.cs

@@ -126,6 +126,7 @@ public class ColumnAttribute : Attribute
         /// <summary>
         /// 重读功能<para></para>
         /// 比如：[Column(RereadSql = &quot;{0}.STAsText()&quot;)]<para></para>
+        /// 或者：[Column(RereadSql = &quot;{geo}.STAsText()&quot;)]<para></para>
         /// 查询：SELECT a.[id], a.[geo].STAsText() FROM [table] a
         /// </summary>
         public string RereadSql { get; set; }

FreeSql/DataAnnotations/ColumnFluent.cs

@@ -206,6 +206,7 @@ public ColumnFluent RewriteSql(string value)
         /// <summary>
         /// 重读功能<para></para>
         /// 比如：[Column(RereadSql = &quot;{0}.STAsText()&quot;)]<para></para>
+        /// 或者：[Column(RereadSql = &quot;{geo}.STAsText()&quot;)]<para></para>
         /// 查询：SELECT a.[id], a.[geo].STAsText() FROM [table] a
         /// </summary>
         /// <param name="value"></param>

FreeSql/FreeSql.xml

@@ -75,7 +75,18 @@ public string RereadColumn(ColumnInfo col, string columnName)
         {
             var result = QuoteReadColumnAdapter(col.CsType, col.Attribute.MapType, columnName);
             if (string.IsNullOrWhiteSpace(col?.Attribute.RereadSql) == false)
-                return string.Format(col.Attribute.RereadSql, result);
+            {
+                var tableAlias = columnName.Replace(QuoteSqlName(col.Attribute.Name), "");
+                var rereadSql = Regex.Replace(col.Attribute.RereadSql, @"\{([_\w][_\w\d]+)\}", rm =>
+                {
+                    if (col.Table.ColumnsByCs.TryGetValue(rm.Groups[1].Value, out var trycol))
+                        return $"{tableAlias}{QuoteSqlName(trycol.Attribute.Name)}";
+                    else if (col.Table.Columns.TryGetValue(rm.Groups[1].Value, out trycol))
+                        return $"{tableAlias}{QuoteSqlName(trycol.Attribute.Name)}";
+                    return rm.Groups[0].Value;
+                });
+                return string.Format(rereadSql, result);
+            }
             return result;
         }
         public virtual string FieldAsAlias(string alias) => $" {alias}";