REPLACE(X, Y, Z) – X is the input string literal or column. Y is the string to replace with the string Z. Note that it will replace any occurrence of the string Y with Z, not just one. Example: In the following query, we will replace all the occurrence of the string “xx” w...
SELECT * FROM users WHERE email REGEXP '.*example\\.com$'; 注意:SQLite默认不支持REGEXP操作符,但可以通过加载外部函数库(如libsqlite3-regexp)来实现。 遇到的问题及解决方法: 问题:SQLite不支持REGEXP操作符。 原因:SQLite的标准版本没有内置正则表达式支持。
决定是否使用sqlite的数据库备份文件覆盖一个sqlite 类似于ODBC or JDBC URL连接的数据库的数据,当parameter isSave is zero,指将当前sqlite连接的数据库中的数据备份出来替换Replace zFileName指向的数据库备份文件);
The default output mode is "list". In list mode, each record of a query result is written on one line of output and each column within that record is separated by a specific separator string. The default separator is a pipe symbol ("|"). List mode is especially useful when you are g...
.prompt MAIN CONTINUE Replace the standard prompts .quit Exit this program .read FILENAME Execute SQL in FILENAME .schema ?TABLE? Show the CREATE statements .separator STRING Change separator used by output mode and .import .show Show the current values for various settings ...
separated values tcl TCL list elements .nullvalue STRING Print STRING in place of NULL values .output FILENAME Send output to FILENAME .output stdout Send output to the screen .prompt MAIN CONTINUE Replace the standard prompts .quit Exit this program .read FILENAME Execute SQL in FILENAME ....
Future<void> insertData(MyData data, Database db) async {try {// 插入数据到数据库await db.insert('my_table',data.toMap(),// 如果插入的数据与已有数据冲突(例如,两个数据有相同的主键),则替换旧数据conflictAlgorithm: ConflictAlgorithm.replace,);} catch (e) {// 打印错误信息print('Failed to ...
Replace(String, String, ContentValues) Convenience method for replacing a row in the database. ReplaceOrThrow(String, String, ContentValues) Convenience method for replacing a row in the database. SetCustomAggregateFunction(String, IBinaryOperator) Register a custom aggregate function that can be...
String: replicate, charindex, leftstr, rightstr, ltrim, rtrim, trim, replace, reverse, proper, padl, padr, padc, strfilter. Aggregate: stdev, variance, mode, median, lower_quartile, upper_quartile For an example, seedinedal/go-sqlite3-extension-functions. ...
Replace format with the format string of substitutions and date/time column name with the name of the datetime column that you want to format. For example, if you have a column named Second of Created At that includes information too granular for your needs (for example, it contains time in...