zoukankan      html  css  js  c++  java
  • oracleI基础入门(12)SQL 语法 Crazy

    SQL 语法
    Select
               SELECT "栏位" FROM "表格名"
    Distinct
                SELECT DISTINCT "栏位"
                 FROM "表格名"
    Where
                 SELECT "栏位"   FROM "表格名" WHERE "condition"
    And/Or
                 SELECT "栏位"  FROM "表格名" WHERE "简单条件"  {[AND|OR] "简单条件"}+
    In
                  SELECT "栏位" FROM "表格名" WHERE "栏位" IN ('值1', '值2', ...)
    Between
                SELECT "栏位" FROM "表格名" WHERE "栏位" BETWEEN '值1' AND '值2'
    Like
                 SELECT "栏位" FROM "表格名" WHERE "栏位" LIKE {模式}
    Order By
                 SELECT "栏位" FROM "表格名" [WHERE "条件"] ORDER BY "栏位" [ASC, DESC]
    Count
                 SELECT COUNT("栏位") FROM "表格名"
    Group By
                  SELECT "栏位1", SUM("栏位2") FROM "表格名" GROUP BY "栏位1"
    Having
                   SELECT "栏位1", SUM("栏位2") FROM "表格名" GROUP BY "栏位1"HAVING (函数条件)
    Create Table
                     CREATE TABLE "表格名"
                     ("栏位 1" "栏位 1 资料种类",
                    "栏位 2" "栏位 2 资料种类"",
                         ... )
    Drop Table
                        DROP TABLE "表格名"
                       Truncate Table
                      TRUNCATE TABLE "表格名"
    Insert Into
                       INSERT INTO "表格名" ("栏位1", "栏位2", ...)
                       VALUES ("值1", "值2", ...)
    Update
                     UPDATE "表格名"
                  SET "栏位1" = [新值]
                  WHERE {条件}
    Delete From
                    DELETE FROM "表格名"
                     WHERE {条件}

  • 相关阅读:
    直线DDA,直线和圆的Bresenham算法
    Matlab 多项式及其函数
    Matlab M文件变量检测与传递
    Matlab图形绘制
    C# vb .NET读取识别条形码线性条码ean-8
    C# vb .NET读取识别条形码线性条码code39
    C# vb .NET读取识别条形码线性条码EAN-13
    C# vb .NET读取识别条形码线性条码code128
    C# VB .net读取识别条形码线性条码codabar
    一张图看懂SharpBarcode
  • 原文地址:https://www.cnblogs.com/flyscan/p/2546002.html
Copyright © 2011-2022 走看看