The correct behavior for an aggregate concatenation query is undefined 简单来说,这样拼接字符串,虽然在语法上支持,但是却不能保证这样的结果正确性,聚合串联查询的行为是不确定的。如果想安全可靠的拼接字符串的话,有下面一些方式: 1. 1: 使用游标循环循环处理拼接字符串。 2: 使用
对于字符串合并的过程,我们也可以用序列图来表示数据流动和操作步骤: SQLServerUserSQLServerUserDeclare StringsAcknowledge DeclarationsExecute Concatenation (+)Return Full NameExecute CONCATReturn Full NameExecute FOR XML PATHReturn Combined NamesExecute STRING_AGGReturn All Names 序列图展示了用户与数据库之间的交...
SELECTSortID, STRING_AGG(Name,'|')ASDepartments FROMdbo.TEST WHEREIDIN(1,2,3) GROUPBYSortID ORDERBYSortID; 参考资料: https://stackoverflow.com/questions/5538187/why-sql-server-ignores-vaules-in-string-concatenation-when-order-by-clause-speci/5538210#5538210 https://stackoverflow.com/questions...
Use string_agg if you are on SQL 2017 or later. Else use FOR XML PATH(''). I have a primer on dynamic pivot here: https://www.sommarskog.se/dynamic_sql.html#pivot. This section includes examples with both string_agg and FOR XML PATH. Please sign in to rate this answer. 0 ...
String and binary functions Expand table FunctionDescription expr1 || expr2 Returns the concatenation of expr1 and expr2. aes_decrypt(expr, key[, mode[, padding[, aad]]]) Decrypts a binary expr using AES encryption. aes_encrypt(expr, key[, mode[, padding[, iv[, aad]]]) E...
例如，字符串 "Long strings can be bro\ ken into two or more pieces." 与字符串是相同的。 "L...
Line Break in Concatenation Line break or Carriage return in a Delimited Field in Sql Linked Server Authentication Error - [SQLSTATE 42000] (Error 7303) linked server error linked server exec stored procdure results in Transaction context in use by another session. Linked Server Giving an Error ...
On a side note, I’ll mention the “SELECT @SQL = @SQL + …” technique is sometimes used for set-based aggregate string concatenation instead of XML PATH or STRING_AGG(). However, that should be avoided because it is nether supported nor reliable. A quote from Microsoft in response to...
SQL string concatenation assigns the author’s full name to the alias author_name. The data gathered by the query are sorted in ascending order by the last_name field. There are a few things to notice in the SQL statement. First, authors are presented by their full names in a single ...
public abstract void appendData(String arg) throws DOMExecption Append the string to the end of the character data of the node. Upon success, data provides access to the concatenation of data and the DOMString specified. PARAMETERS arg - The DOMString to append. ...