SQLite error al tratar de guardar y leer imagenes desde la shell

Preguntas RecientesSQLite error al tratar de guardar y leer imagenes desde la shell
snow Staff preguntada 1 año antes

cree una aplicación en android en donde guardo imagenes directamente a la base de datos. Extraje el archivo de la base de datos sqlite de mi celular y quiero abrirla desde la shell de sqlite3 para sacar las imagenes de la base… Encontre en internet que se pueden usar estos comandos

 INSERT INTO images(name,type,img) VALUES('icon','jpeg',readfile('icon.jpg')); 

y

 SELECT writefile('icon.jpg',img) FROM images 

para insertar y obtener las imagenes, pero cuando ejecuto cualquiera de las dos consultas me bota un error

Error: no such function: writefile
Robertfreet contestada 8 meses antes

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TimothySog contestada 7 meses antes

Sleep apnea has long disrupted the lives of untold number of sufferers as well as their loved ones. To stand a good chance of effectively manage this difficult condition, solid knowledge and understanding of its causes is necessary. Apply the information in this piece, and you will possess the information needed to mitigate the impact sleep apnea has on your life.

One way to improve your sleep apnea is to shed excess weight that you are carrying. Being overweight or obese places pressure on your neck, which can compress your windpipe as you sleep. Losing just 25 pounds can make a difference in your symptoms, and losing enough weight can eliminate the disorder altogether.

Adjust your CPAP machine. Most machines come with default settings that might not correspond to your needs. You should be able to regulate the airflow: try different settings and choose one that seems to work for you. If you feel like your machine is not working like it should, try changing the settings again.

If you have sleep apnea, be sure to ask your doctor every five years if you should have a follow-up sleep study. As your weight and health change, your CPAP pressure may need to be adjusted. The most accurate way to reassess your needs is to have another sleep study with CPAP so the appropriate pressure can be determined.

People who do not have a partner sleeping with them may not know they suffer from sleep apnea. If you wake up with a dry or sore mouth, wake up out of breath, have morning headaches, insomnia, and/or go to the bathroom frequently during the night, you may have sleep apnea and should talk to a doctor.

Keep your bedroom in prime shape for sleeping. Insomnia and sleep apnea are often connected. This makes keeping an environment in which you sleep at the right temperature, lightness level and sound level important for helping you get a good night of rest. The right environment also means leaving your stresses outside the bedroom to ensure you are relaxed enough to fall asleep.

An excellent way to help lessen the effects of sleep apnea is by losing weight. Sometimes, losing weight is all it takes to get rid of sleep apnea. Even a nominal amount of weight loss will go a long way in improving your breathing at night.

If you have difficulties sleeping because of your sleep apnea, you should avoid driving or operating dangerous machines. If you do not get a good night of sleep, take public transportation instead of driving to prevent accidents and do not take a job in a factory or on a construction site.

Minimize your risk from the conditions causing sleep apnea. Some sleep apnea risk factors cannot be changed, like genetic or hereditary reasons. But others, such as weight smoking and drinking, can be controlled.

There are several things that can trigger sleep apnea and there are many treatments. Since you have read this article, you have increased your knowledge about dealing with your sleep apnea. Pass this knowledge on to others whose lives may be affected by this condition. A great night of sleep is still very possible for you.

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snow Staff contestada 1 año antes

en la pagina de sqlite https://www.sqlite.org/cli.html viene ese codigo, y dice que las funciones readfile y writefield no vienen en el core de sqlite, si no son extenciones cargables, es decir que debes de cargar esas funciones a sqlite como si fueran librerias… Si sigues los links que te proporcionan, uno es para descargar el codigo “fileio.c” de la libreria en C que contiene esas funciones: http://www.sqlite.org/src/artifact?ci=trunk&filename=ext/misc/fileio.cl y en los otros enlaces, como copilar ese codigo ese codigo y como leerlo con sqlite

snow contestada 1 año antes

copie el código de la pagina http://www.sqlite.org/src/artifact?ci=trunk&filename=ext/misc/fileio.c en un archivo “fileio.c” y cuando intento compilar el codigo desde la consola me bota un error “sqlite3.h: No such file or directory”

drozz contestada 1 año antes

tus librerias de sqlite han de estar des actualizadas, instenta instalar “apt-get install libsqlite3-dev”, despues compilas segun la documentacion de sqlite “gcc -g -fPIC -shared YourCode.c -o YourCode.so”, y al final despues de que habras una consola en sqlite escribes “.load ./YourCode”

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