在SQLite中,"REPLACE INTO SELECT VALUES"语句是一种用于更新数据库表中数据的SQL语句。它的语法如下: REPLACE INTO table_name (column1, column2, ..., columnN) SELECT value1, value2, ..., valueN FROM another_table WHERE condition; 这个语句的
rows,err:=database.Query("select id, firstname, lastname from user")ifnil!=err{fmt.Println(err)}forrows.Next(){rows.Scan(&id,&firstname,&lastname)fmt.Println(strconv.Itoa(id)+": "+firstname+" "+lastname)}varend=time.Now().UnixMicro()fmt.Printf("SQLiteDemo: %d\n",end-start)}...
replace(X,Y,Z) 将字符串类型的函数参数X中所有子字符串Y替换为字符串Z,最后返回替换后的字符串,源字符串X保持不变。 round(X[,Y]) 返回数值参数X被四舍五入到Y刻度的值,如果参数Y不存在,缺省参数值为0。 rtrim(X[,Y]) 如果没有可选参数Y,该函数将移除参数X右侧的所有空格符。如果有参数Y,则移除X...
select replace('abc-abc', 'abc', '字符') AS "替换后字符" 返回结果 替换后字符 字符-字符 round(X) round(X,Y) 将浮点值X四舍五入到小数点右侧的Y位。 如果Y参数被省略或为负,则认为是0。 示例 select round(12.345) "取整", round(12.345, 2) AS "保留2位" 返回结果 rtrim(X) rtrim(X,Y...
就像这样：REPLACE INTO clusure SELECT sel.col1,sel.col2,...,sel....
选择查询:select 字段(以”,”隔开) from 表名 where 条件; 日期和时间:Select datetime('now') 日期: selectdate('now'); 时间: selecttime('now'); 总数:selectcount(*) from table1; 求和:select sum(field1) from table1; 平均:select avg(field1) from table1; ...
Runningsqlite3throughelectron-rebuilddoes not preserve the SQLCipher extension, so some additional flags are needed to make this build Electron compatible. Yournpm install sqlite3 --build-from-sourcecommand needs these additional flags (be sure to replace the target version with the current Electron ...
SELECT ecp.objtype, ecp.usecounts, ecp.size_in_bytes, REPLACE(REPLACE(est.text, char(13), ''), char(10), ' ') AS querytext FROM sys.dm_exec_cached_plans ecp cross apply sys.dm_exec_sql_text(ecp.plan_handle) est WHERE cacheobjtype='Compiled Plan' ...
{SQLite3 ODBC Driver};Database=C:\sqlite\day_book.db" conn.Open Connstr arr = Sheets("销售数据源").[a1].CurrentRegion For i = 2 To UBound(arr) conn.Execute "insert or replace into 销售数据源 values('" & Join(Application.Rept(Application.Index(arr, i, 0), 1), "','") & "'...
UPDATE OR REPLACE ... INSERT OR FAIL ... INSERT OR IGNORE ... INSERT OR REPLACE ... REPLACE INTO ... SQL语句日志文件使用随机的文件名,不一定要在与主数据库相同的目录下,在事务结束时自动删除。SQL语句日志的空间大小只是UPDATE或INSERT语句完成的更改部分的比例大小。 (...