下面是一个将数组转换成自定义格式的示例代码: CREATEFUNCTIONarray_to_string(arrINT[])RETURNSTEXTBEGINDECLAREiINTDEFAULT1;DECLAREresultTEXTDEFAULT'';WHILEi<=ARRAY_LENGTH(arr,1)DOSETresult=CONCAT(result,arr[i]);IFi<ARRAY_LENGTH(arr
下面是一个自定义函数的示例,假设我们有一个名为array_to_string的函数,可以将数组转换为一个逗号分隔的字符串: DELIMITER//CREATEFUNCTIONarray_to_string(arrVARCHAR(255))RETURNSVARCHAR(255)BEGINDECLAREresultVARCHAR(255)DEFAULT'';DECLAREiINTDEFAULT1;DECLAREelementVARCHAR(255);DECLARElenINT;SETlen=CHAR_LENGTH...
PostgreSQL是完全由社区驱动的开源项目，由全世界超过1000名贡献者所维护。它提供了单个完整功能的版本，而...
Laravel Version: v8.11.2 PHP Version: 7.4 Database Driver & Version: MySQL, 'strict' => false, Description: When MySQL throws an exception (I can't see exactly which exception) due to the nature of the error, Laravel throws a Array to st...
如何将MaxCompute中类型为array<string>的数据导入至AnalyticDB MySQL集群? 原因:MaxCompute外表不支持嵌套类型,无法直接将类型为array<string>的数据导入至AnalyticDB MySQL。 解决方法:您可以将MaxCompute中的数据以Parquet的格式导入至OSS,再通过AnalyticDB for MySQL读取OSS中以Parquet格式存储的数据。
(password),hash_stage1,hash_stage2);/* create crypt string as sha1(message, hash_stage2) */;compute_sha1_hash_multi((uint8*)to,message,SCRAMBLE_LENGTH,(constchar*)hash_stage2,SHA1_HASH_SIZE);my_crypt(to,(constuchar*)to,hash_stage1,SCRAMBLE_LENGTH);/*while (s1 < s1_end) *to...
SELECT CHAR_LENGTH("RUNOOB") AS LengthOfString; CHARACTER_LENGTH(s) 返回字符串 s 的字符数,等同于 CHAR_LENGTH(s) 返回字符串 RUNOOB 的字符数 SELECT CHARACTER_LENGTH("RUNOOB") AS LengthOfString; CONCAT(s1,s2...sn) 字符串 s1,s2 等多个字符串合并为一个字符串 合并多个字符串 SELECT CONCAT("...
void closeConnection(final PoolEntry poolEntry, final String closureReason) { //移除连接对象 if (connectionBag.remove(poolEntry)) { final Connection connection = poolEntry.close(); //异步关闭连接 closeConnectionExecutor.execute(() -> { quietlyCloseConnection(connection, closureReason); //由于可用...
-- trans_array拆解正则表达式数据结构 1SELECT2TRANS_ARRAY(1,'},',user_id,regexp_replace(t.data_info,'\\[|\\]','',0) )as(user_id,cc)3FROM (4selectuser_id, data_infofroma5)t -- trans_array拆解json数据结构 1SELECT DISTINCT2user_id3,GET_JSON_OBJECT(tolower(ccc),'$.answer')as...
gsql:Oracle_Functions.sql:1035: NOTICE: | function | sys_guid() | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | aggregate | wm_concat(text) | 1.0 | internal | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | nvl2(anyelem...