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,...
CONCAT 语法:CONCAT(string [,string [, ...]])连接字符串。 SELECT CONCAT('Drill','',1.0,'','release') FROM (VALUES(1));+---+| EXPR$0 | +---+|Drill1.0 release | +---+1 row selected (0.134 seconds) INITCAP 语法:INITCAP(string)返回使用首字母大写的字符串。 SELECT INITCAP('china...
CONCAT 會採用可變數量的字串引數,並將其串連 (聯結) 成單一字串。 它至少需要兩個輸入值:否則, CONCAT 會引發錯誤。 CONCAT 會在串連之前將所有引數隱含地轉換成字串類型。 CONCAT 會將Null 值隱含地轉換成空字串。 如果CONCAT收到具有所有NULL值的自變數,則會傳回 varchar(1) 類型的空字串。 隱含轉換成...
DECLARE @string_exp NVARCHAR(4000) = 'Returns the length.'; SELECT {fn BIT_LENGTH( @string_exp )}; -- Returns 304 SELECT {fn OCTET_LENGTH( @string_exp )}; -- Returns 38 SELECT {fn CONCAT( 'CONCAT ','returns a character string')}; -- Returns CONCAT returns a character ...
{1}</BillCode>16</Code>";17varsqlExcute =string.Format(sql,string.Concat(code.Select(brf =>string.Format(sqlBlock, brf.Key, brf.Value)).ToArray()));18SqlHelper.ExecuteNonQuery("Data Source=.;Initial Catalog=Test;Integrated Security=SSPI;", CommandType.Text, sqlExcute);19}2021publicvoid...
This function returns a string resulting from the concatenation, or joining, of two or more string values in an end-to-end manner. Note To add a separating value during concatenation, use CONCAT_WS. Transact-SQL syntax conventions Syntax syntaxsql Copy CONCAT ( argument1 , argument2 [ , ...
This function returns a string resulting from the concatenation, or joining, of two or more string values in an end-to-end manner. Note To add a separating value during concatenation, use CONCAT_WS. Transact-SQL syntax conventions Syntax syntaxsql Copy CONCAT ( argument1 , argument2 [ , ...
首先调用StringTokenizer#countTokens来初始化cmdarray...数组执行如果传入的参数是一个数组对象,来到的具体代码就是在public Process exec(String cmdarray[])方法的调用中。...直接就来到了exec的重载方法public Process exec(String[] cmdarray, String[] envp, File dir) 在这个方法中,直接就将该数组对象传入的...
SELECT CONCAT ('a','b'), CONCAT_WS(',','a','b') 'ab', 'a,b' LEFT, RIGHT, and SUBSTRING Return a partial string from another string expression based on position and length. SELECT LEFT ('abs',2),SUBSTRING ('abcd',2,2) 'ab', 'bc...
Combine multiple string input expressions into a single string with, or without, a separator character (WS). SELECT CONCAT ('a','b'), CONCAT_WS(',','a','b') 'ab', 'a,b' LEFT,RIGHT, andSUBSTRING Return a partial string from another string expres...