sqlite3 - sqlite3 Database Operations

Adapted Air780E Air780EP

Note

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Tip

This library has its own demo,click this link to view sqlite3 demo examples

Example

-- Note that this library is still under development and is not yet supported by most BSPs
-- This transplant is based on sqlite3 3.44.0
sys.taskInit(function()
    sys.wait(1000)
    local db = sqlite3.open("/ram/test.db")
    log.info("sqlite3", db)
    if db then
        sqlite3.exec(db, "CREATE TABLE devs(ID INT PRIMARY KEY NOT NULL, name CHAR(50));")
        sqlite3.exec(db, "insert into devs values(1, \"ABC\");")
        sqlite3.exec(db, "insert into devs values(2, \"DEF\");")
        sqlite3.exec(db, "insert into devs values(3, \"HIJ\");")
        local ret, data = sqlite3.exec(db, "select * from devs;")
        log.info("Query Results", ret, data)
        if ret then
            for k, v in pairs(data) do
                log.info("Data", json.encode(v))
            end
        end
        sqlite3.close(db)
    end
end)

sqlite3.open(path)

Open Database

Parameters

Incoming Value Type	Explanation
string	The path of the database file, which must be filled in, is automatically created if it does not exist.

Return Value

return value type	explanation
userdata	Database pointer, whether to return nil

Examples

local db = sqlite3.open("/test.db")
if db then
   -- Database Operations xxxx

    -- Must be turned off after use
    sqlite3.close(db)
end

---

sqlite3.exec(db, sql)

Execute SQL statements

Parameters

Incoming Value Type	Explanation
userdata	Database pointer obtained through sqlite3.open
string	SQL String, must be filled in

Return Value

return value type	explanation
boolean	Returns true on success, otherwise nil
table	The query result (if any) is returned successfully, otherwise the string with an error is returned.

Examples

None

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sqlite3.close(db)

Close the database

Parameters

Incoming Value Type	Explanation
userdata	Database pointer obtained through sqlite3.open

Return Value

return value type	explanation
boolean	Returns true on success, otherwise nil

Examples

None

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