12/11/2023 0 Comments Sqlite commands listSqlite> INSERT INTO CLIENT SELECT * FROM CLIENT_OLD Ĭolumns returned by select have to match elements expected by insert.Ĭopy some contents from a table into another one: SQL As Understood By SQLite (On conflict)Ĭopy contents from a table into another one: Sqlite> INSERT OR REPLACE INTO VARS (name,value) VALUES('color', 'blue') Insert a row in a table, but if a conflict arises because of a UNIQUE or PRIMARY KEY constraint then replace that row: Sqlite> INSERT INTO VARS (name,value) VALUES('color', 'blue') Sqlite> select * from CLIENTS ORDER BY Name DESC LIMIT 3 This LIMIT keyword can be used along ORDER BY to specify a column to order results. Show contents of a table limiting number of rows in the result: Sqlite> CREATE TABLE IF NOT EXISTS VARS (name VARCHAR(128) PRIMARY KEY ,value VARCHAR(512) NOT NULL) Sqlite> CREATE TABLE VARS (name VARCHAR(128) PRIMARY KEY ,value VARCHAR(512) NOT NULL) Ĭreate the table only if it does not already exist: We can access client database tables preceded by 'client.' prefix. database command shows client database too. Sqlite> ATTACH DATABASE 'client.db' AS client Other types like VARCHAR(N), DECIMAL(N, M) are assimilated to the former storage classes by their affinity (VARCHAR to TEXT, DECIMAL to INTEGER), so their limits (N, M.) are not enforced.Īttach another database (client) from other file (client.db): TEXT: a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16LE).īLOB: a blob of data, stored exactly as it was input. REAL: a floating point value, stored as an 8-byte IEEE floating point number. INTEGER: a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value. List all databases and their associated files:ĬREATE TABLE "PRODUCTS" (Id INTEGER PRIMARY KEY AUTOINCREMENT ,TStamp INTEGER NOT NULL ,Name VARCHAR(60) NOT NULL ,Price DECIMAL(10,5) NOT NULL) If TABLE specified, only dump tables matching databases List names and files of attached databases clone NEWDB Clone data into NEWDB from the existing database bail on|off Stop after hitting an error. backup ?DB? FILE Backup DB (default "main") to FILE Sqlite3 is the command line interface for SQLite version 3. There are special as they are used to format the output.SQLite is a database engine contained in a C library that usually stores its data in a file. There are three special dot commands including. To turn the cpu timer measurement on or off. To set the column widths for “column” mode. To try opening locked tables for ms milliseconds. To list names of tables matching like a pattern. To show the current values for various settings. To change the separator used by output mode and. To show names of all indices or to show the indices for tables matching like pattern table, if thee table iis specified. To turn the display of headers on or off. To turn the output mode suitable for explain on or off. It only dumps the tables matching like pattern table, if it is specified. To dump the database in an sql text format. To list the names and the files of the attached databases. Below is a list of some popular SQLite dot commands. To check the list of dot commands use the “.help” command. The dot commands are not terminated by a semicolon ( ). To retrieve certain records from one or more tables. To delete an entire table, a view of a table or other object in the database. To modify an existing database object like a table. To create a table, a view of a table or other object in the database. SQLite commands can be either of the three types:
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