9 10 11 12 13 14 15 DB 文件 1 4 10 13 12 Page (定长) B-tree 2 7 9 B-tree Header (100 – 16 bytes) SQLite Header Magic / KDF Salt (16 bytes) sqlite_master 表根节点 (PageSize – 100 bytes) Page 1 INDEX 语句 初始化流程 打开文件 读取 Salt，根据密钥生成 Key 解码 Page 1，读取 Header 解析 sqlite_master，生成 Schema 关键数据 打开文件 读取 Salt，根据密钥生成 Key 解码 Page 1，读取 Header 解析 sqlite_master，生成 Schema Salt 【用于正确解密】 Page Size 【正确划分Page】

= NULL, dbWriteTable_SQLiteConnection_character_character 7 overwrite = FALSE, append = FALSE, header = TRUE, colClasses = NA, row.names = FALSE, nrows = 50, sep = ",", eol = "\n", skip = 0, temporary to an existing table in the DBMS. Its default is FALSE. header is a logical indicating whether the first data line (but see skip) has a header or not. If missing, it value is determined following read Description Return the version of RSQLite. Usage rsqliteVersion() Value A character vector containing header and library versions of RSQLite. Examples RSQLite::rsqliteVersion() SQLite Connect to an SQLite

explain ON|OFF Turn output mode suitable for EXPLAIN on or off. With no args, it turns EXPLAIN on. .header(s) ON|OFF Turn display of headers on or off .help Show this message .import FILE TABLE Import sequence of dot commands to format your output the way I have listed down in this tutorial: sqlite>.header on sqlite>.mode column sqlite>.timer on sqlite> Above setting will produce the output in the statement. Here, first three commands have been used to set properly formatted output. sqlite>.header on sqlite>.mode column sqlite> SELECT * FROM COMPANY; Finally, you will get the following result:

Structured Query Language (SQL) commands. To see a full list of dot commands, check ​here​. .header Turn display headers on or off .help Display the help menu listing dot commands .mode