STRING_SPLIT(str_val) 实例: SELECTvalueFROMSTRING_SPLIT('1,2,3,4,5,6,7,8,9,10',','); 结果: 实例: SELECTvalueFROMSTRING_SPLIT('dog cat fish bird lizard',' '); 结果: STRING_AGG# 说明:将选中的多个列合并到一个行中 STRING_AGG(ColumnName, ConcatString) 实例: SELECTSTRING_AGG(Name,...
T-SQL中的string_agg函数用于将多个字符串连接成一个字符串。在LINQ中,可以使用C#来实现类似的功能。 在C#中,可以使用LINQ的Aggregate方法来实现字符串的连接。下面是将T-SQL的string_agg函数转换为LINQ C#的示例代码: 代码语言:txt 复制 using System; using System.Linq; public class Program { public static ...
CHECKSUM_AGG 會忽略 Null 值。 OVER 子句可以跟在 CHECKSUM_AGG 後面。 Transact-SQL 語法慣例 (部分機器翻譯) 語法 syntaxsql 複製 CHECKSUM_AGG ( [ ALL | DISTINCT ] expression ) 引數 ALL 將彙總函式套用至所有值。 ALL 是預設引數。 DISTINCT 指定CHECKSUM_AGG 傳回唯一值的總和檢查碼。 expression...
REVERSE ( character_expression )-- 返回字符表达式的反转。 REPLACE ( 'string_expression1' , 'string_expression2' , 'string_expression3' )--用第三个表达式替换第一个字符串表达式中出现的所有第二个给定字符串表达式。 STUFF ( character_expression , start , length , character_expression )--删除指定...
Aggregate functions T-SQL provides include: APPROX_COUNT_DISTINCT, AVG, CHECKSUM_AGG, COUNT, COUNT_BIG, GROUPING, GROUPING_ID, MAX, MIN, STDEV, STDEVP, STRING_AGG, SUM, VAR, and VARP. Scalar Functions Unlike aggregate functions, scalar functions will only operate on a single value and return...
2.1.2.133 S071, SQL paths in function and type name resolution 2.1.2.134 S081, Subtables 2.1.2.135 S091, Basic array support 2.1.2.136 S091-01, Arrays of built-in data types 2.1.2.137 S091-02, Arrays of distinct types 2.1.2.138 S091-03, Array expressions 2.1.2.139 S092, Array...
Subclause 6.30, "<string value function>": <binary value function> ::= <binary substring function> | <binary trim function> | <binary overlay function> ... Conformance Rules Without Feature T042, "Extended LOB data type support", or Feature T022, "Advanced support for BINARY and VARBI...
('created_at', '<=', $day . ' 23:59:59') + ->distinct('ip') + ->count('ip'); + return $result; + } +} diff --git a/module/VisitStatistic/config.json b/module/VisitStatistic/config.json index 808dbdfe..e6014d23 100644 --- a/module/VisitStatistic/config.json +++ b/...
DTS_E_SQLTASK_VARIABLENOTFOUND 字段 DTS_E_SQLTASK_VARIABLETYPEISNOTSTRING 字段 DTS_E_SQLTASKCONN_ERR_CANT_LOAD_XML 字段 DTS_E_SQLTASKCONN_ERR_NO_DISCONNECTED_RS 字段 DTS_E_SQLTASKCONN_ERR_NO_ROWS 字段 DTS_E_SQLTASKCONN_ERR_NOROWSET 字段 DTS_E_SQLTASKCONN_ERR_ODBC_DISCONNECTED 字段 ...
($adapterName == 'pgsql' || $adapterName == 'Pdo_Pgsql' || $adapterName == 'Pdo_SQLite' || $adapterName == 'SQLite') { - $order_by = 'RANDOM()'; - } else { - $order_by = 'RAND()'; - } - $select = $this->select()->from('table.contents') - ->join('table....