*/int[] createTabInd = RouterUtil.getCreateTablePos(upStmt,0);if(createTabInd[0] >0) {inttableNameIndex=createTabInd[0] + createTabInd[1];if(upStmt.length() > tableNameIndex) {StringtableName=stmt.substring(tableNameIndex).trim();intind2=tableName.indexOf('.');if(ind2 >0) { ...
Performs case-insensitive string comparison and returns: 0 if two strings are equivalent, 1 if the first string is greater than the second, and -1 if the first string is less than the second. $substr Deprecated. Use $substrBytes or $substrCP. $substrBytes Returns the substring of a string...
StringBuilder sqlString = new StringBuilder(); List<String> conditions = new ArrayList<String>(); for (SysRole role : user.getRoles()) { String dataScope = role.getDataScope(); if (!DATA_SCOPE_CUSTOM.equals(dataScope) && conditions.contains(dataScope)) { continue; } if (StringUtils.isNotE...
MongoDB基础教程系列-- MongoDB 聚合管道 在讲解聚合管道(Aggregation Pipeline)之前,我们先介绍一下 MongoDB 的聚合功能,聚合操作主要用于对数据的批量处理,往往将记录按条件分组以后,然后再进行一系列操作,例如,求最大值、最小值、平均值,求和等操作。聚合操作还能够对记录进行复杂的操作,主要用于数理统计和数据挖掘...
放在Aggregation.newAggregation()中的顺序都会不一样的,对于mongodb中内置的一些字符串函数和日期函数,主要都是在project类型的聚合操作中进行的,比如上边的例子,为了取出日期中的年份,使用substring函数操作提取日期字符串的前四位,当然如果你保存日期的时候,不是使用String类型,而且DateTime类型,则可以直接使用year,month...
String.concat String.contains String.endsWith String.includes String.indexOf String.lastIndexOf String.localeCompare String.match String.normalize String.replace String.search String.slice String.split String.startsWith String.substr String.substring ...
Technorati 标签:mongodb 代码语言:javascript 代码运行次数:0 classProgram{staticvoidMain(string[]args){while(true){newThread(delegate(){Console.WriteLine("开始释放");Cmd(@"echo 正在启动MongoDBd:cdD:\mongodb\bin mongo use admin db.runCommand({closeAllDatabases:1})", "bye");Console.WriteLine("释...
If the substring is not found, returns -1. $split Splits a string into substrings based on a delimiter. Returns an array of substrings. If the delimiter is not found within the string, returns an array containing the original string. $strcasecmp Performs case-insensitive string comparison ...
"^pattern": The regular expression pattern.^denotes the start of a string, andpatternis the substring you want to match. Example Scenario Let’s say we have a collection nameduserswith documents like the following: db.users.insertMany([{name:"John Doe"},{name:"Jane Smith"},{name:"Jack...
String suffix = ""; if (Objects.requireNonNull(file.getOriginalFilename()).contains(".")) { suffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")); } return suffix; } } MongoFileRepository.java