在Oracle数据库中,错误信息“result of string concatenation is too long”通常表示字符串连接的结果超过了数据库允许的最大长度。 错误原因 在Oracle中,VARCHAR2类型字符串的最大长度为4000个字符。如果尝试连接(使用||操作符)的字符串总长度超过了这个限制,就会触发这个错误。 示例 假设有以下
String concatenation is shown with the || operator, taken from PL/I. However, you can also find the plus sign being overloaded in the Sybase/SQL Server family and some products using a function call like CONCAT(s1, s2) instead. The SUBSTRING(< string > FROM < start > FOR < length >...
Different SQL databases provide various ways to perform string concatenation. Here are the most commonly used methods: 2.1. Using the || Operator Most SQL databases, includingPostgreSQLandOracle, use the || operator to concatenate strings. We’ll use theUniversity schemain our code examples: USE ...
Oracle Database - Enterprise Edition - Version 19.20.0.0.0 and laterInformation in this document applies to any platform.SymptomsORA-01489: result of string concatenation is too long after Upgrade database from 11.2.0.3 to 11.2.0.4 and then to 19c.Changes...
报错:result of string concatenation is too long 究其原因,使用listagg进行分组拼接时,oracle对字符变量的长度限制,而listagg 拼接返回的类型为varchar ,最大长度为4000,当报错信息太长的时候就会导致字段超出 解决方法就是换个方式 原先的: listagg('上层:'||XXX||'、明细:'||XXX||'、上层为:'||XXX||'、...
ORA-01489: result of string concatenation is too long SELECT t.tablespace_name, listagg(t.table_name, ',') WITHIN GROUP(ORDER BY table_name) over(PARTITION BY tablespace_name) clause FROM user_tables t; 1. 2. 3. 错误是由于oracle对字符串长度有限制,长度不能超过4000.超过4000以后需要转为cl...
LINQ to SQL支持以下String方法。但是不同的是默认情况下System.String 方法区分大小写。而SQL则不区分大小写。 1.String Concatenation varq =fromcindb.Customersselect new{ c.CustomerID, Location = c.City +", "+ c.Country }; 这个例子使用了+操作符重新组合了顾客的区域。
STRING with more than 2 parameters has to be converted to concatenation using || operator in Oracle: Sybase SQL Anywhere: SELECT STRING('New ', 'York ', 'City'); -- Result: New York City SELECT STRING(1, 3, 7); -- Result: 137 SELECT STRING('New ', NULL, 'City'); -- ...
3. Concatenating Values in PostgreSQL SELECT array_to_string(array_agg(column_name), ', ') AS concatenated_result FROM table_name; Performance Considerations When using alternative methods, consider the following: Data Size: Large datasets can impact the performance of concatenation functions. ...
ERROR at line 1: ORA-01489: result of string concatenation is too longProblem Description:The problem with this query is with the use of CONCAT operator (||). e.g.: select char1 || char2 from dual Concat operator returns char1 concatenated with char2. The string returned is in the ...