From 7744f7c3a088b4bbefd782f28b5bbceed2e868af Mon Sep 17 00:00:00 2001
From: yulichang <570810310@qq.com>
Date: Wed, 21 Dec 2022 14:49:48 +0800
Subject: [PATCH] =?UTF-8?q?selectAs=E9=87=8D=E8=BD=BD?=
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---
 .../yulichang/wrapper/interfaces/Query.java   | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/mybatis-plus-join-core/src/main/java/com/github/yulichang/wrapper/interfaces/Query.java b/mybatis-plus-join-core/src/main/java/com/github/yulichang/wrapper/interfaces/Query.java
index e4178aa..3126b4d 100644
--- a/mybatis-plus-join-core/src/main/java/com/github/yulichang/wrapper/interfaces/Query.java
+++ b/mybatis-plus-join-core/src/main/java/com/github/yulichang/wrapper/interfaces/Query.java
@@ -4,6 +4,7 @@ import com.baomidou.mybatisplus.core.metadata.TableFieldInfo;
 import com.baomidou.mybatisplus.core.metadata.TableInfo;
 import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
 import com.baomidou.mybatisplus.core.toolkit.Assert;
+import com.baomidou.mybatisplus.core.toolkit.Constants;
 import com.baomidou.mybatisplus.core.toolkit.support.SFunction;
 import com.github.yulichang.toolkit.LambdaUtils;
 import com.github.yulichang.toolkit.MPJReflectionKit;
@@ -71,6 +72,28 @@ public interface Query<Children> extends Serializable {
         return getChildren();
     }
 
+    /**
+     * String 查询
+     *
+     * @param column 列
+     */
+    default <E> Children select(String column, SFunction<E, ?> alias) {
+        getSelectColum().add(new SelectString(column + Constants.AS + LambdaUtils.getName(alias)));
+        return getChildren();
+    }
+
+    /**
+     * String 查询
+     *
+     * @param column 列
+     */
+    default <E> Children select(String index, SFunction<E, ?> column, SFunction<E, ?> alias) {
+        Map<String, SelectCache> cacheMap = ColumnCache.getMapField(LambdaUtils.getEntityClass(column));
+        SelectCache cache = cacheMap.get(LambdaUtils.getName(column));
+        getSelectColum().add(new SelectString(index + Constants.DOT + cache.getColumn() + Constants.AS + LambdaUtils.getName(alias)));
+        return getChildren();
+    }
+
     /**
      * 说明：
      * 比如我们需要查询用户表有10个字段，然而我们只需要3个就够了，用mybatis-plus提供的select<p />