我假设Col1的数据类型不是整数或数字，而是字符串类型，例如text或varchar，并且似乎值中包含一些空格。我...
Case-insensitive name to register this function under, limited to 255 UTF-8 bytes in length. aggregateFunction IBinaryOperator Functional interface that will be invoked when the function name is used by a SQL statement. The argument values from the SQL statement are passed to the functional inte...
select distinct id, value from t1; 字段表中可以使用条件结果语句case。 case valuewhen x/cond1 then value1when y/cond2 then value2when z/cond3 then value3else nullend [ , ]create table y( f int );insert into y values(1); insert into y values(3);insert into y values(2); insert ...
Examples Creating a table and inserting data Getting a single row Getting many rows Inserting rows Updating rows Prepared statement each() Get the driver instance Closing the database ES6 tagged template strings Migrations Typescript tricks Import interfaces from sqlite ...
If you want to know how to perform a storage without primary key take a look at date_time.cpp example in examples folder.Prepared statementsPrepared statements are strongly typed.// SELECT doctor_id // FROM visits // WHERE LENGTH(patient_name) > 8 auto selectStatement = storage.prepare(...
static void NativeMain() { // Open the database--db is our "handle" to it IntPtr db; if (SQLiteNative.sqlite3_open(@"cities.sqlite", out db) == SQLiteNative.SQLITE_OK) { // Prepare a simple DDL "CREATE TABLE" statement string query = "CREATE TABLE City " + "(name TEXT, sta...
In case of a multi-page application the JavaScript used by each page must use sqlitePlugin.openDatabase to open the database access handle object before it can access the data. NOTE: If a sqlite statement in a transaction fails with an error, the error handler must return false in order ...
If you want to know how to perform a storage without primary key take a look at date_time.cpp example in examples folder.Prepared statementsPrepared statements are strongly typed.// SELECT doctor_id // FROM visits // WHERE LENGTH(patient_name) > 8 auto selectStatement = storage.prepare(...
In SQLite version 2, if many processes are reading from the database, it might be the case that there is never a time when there are no active readers. And if there is always at least one read lock on the database, no process would ever be able to make changes to the database bec...
(const char* szSQL); CppSQLiteStatement compileStatement(const char* szSQL); int lastRowId(); void interrupt() { sqlite_interrupt(mpDB); } void setBusyTimeout(int nMillisecs); static const char* SQLiteVersion() { return SQLITE_VERSION; } private: CppSQLiteDB(const CppSQLiteDB& db); ...