mysql - List users by program -


having tables these:

users:

create table `affiliate__model__user_node` (  `id` bigint(20) not null auto_increment,  `user_id` bigint(20) default null,  primary key (`id`) ) engine=innodb

programs:

create table `affiliate__model__program` (  `id` bigint(20) not null auto_increment,  `name` varchar(255) not null,  primary key (`id`), ) engine=innodb

users using programs:

create table `affiliate__model__user_program` (  `user_id` bigint(20) not null default '0',  `program_id` bigint(20) not null default '0',  `username` varchar(255) not null,  primary key (`user_id`,`program_id`) )

how list users belonging particular program, this?

   user_id    | program 1 | program 2 | program 3 | program n .... --------------+-----------+-----------+-----------+-----------                     1    |     y     |      n    |      n    |     y          3    |     n     |      n    |      n    |     n          7    |     n     |      y    |      n    |     n          12   |     y     |      y    |      y    |     y          n    |     n     |      n    |      n    |     y

(number of programs may change according program table data, it's limited ~20).

you can try using following query:

select     user.user_id,     if(program.name = 'program 1', 'y', 'n') 'program 1'     if(program.name = 'program 2', 'y', 'n') 'program 2'     if(program.name = 'program 3', 'y', 'n') 'program 3'     ... affiliate__model__user_node user inner join affiliate__model__user_program model on user.id = model.user_id inner join affiliate__model__program program on model.program_id = program.id

for ~20 program columns won't win award being prettiest query, should job done.


-

Comments

Post a Comment

Popular posts from this blog

OpenCV OpenCL: Convert Mat to Bitmap in JNI Layer for Android -

there several posts converting mat bitmap using utils.mattobitmap() function. i'm assuming function can called in java layer after importing utils class. i want transfer data memory address pointed uint32_t* bmpcontent; in code below. jniexport void jnicall java_com_nod_nodcv_nodcvactivity_runfilter( jnienv *env, jclass clazz, jobject outbmp, jbytearray indata, jint width, jint height, jint choice, jint filter) { int outsz = width*height; int insz = outsz + outsz/2; androidbitmapinfo bmpinfo; if (androidbitmap_getinfo(env, outbmp, &bmpinfo) < 0) { throwjavaexception(env,"gaussianblur","error retrieving bitmap meta data"); return; } if (bmpinfo.format != android_bitmap_format_rgba_8888) { throwjavaexception(env,"gaussianblur","expecting rgba_8888 format"); return; } uint32_t* bmpcontent; if (androidbitmap_lockpixels(env, outbmp,(void**)&bmpcontent)...
Read more

android - org.xmlpull.v1.XmlPullParserException: expected: START_TAG {http://schemas.xmlsoap.org/soap/envelope/}Envelope -

i trying hit soap api in application login purpose , getting above mentioned error , can 1 tell me going wrong , first time soap apis. here code hit soap :- vector<object> args = new vector<object>(); hashtable<string, object> hashtable = new hashtable<string, object>(); hashtable.put("email", "mss.siddhart28@gmail.com"); hashtable.put("password", "siddharth"); args.add(hashtable); soapserializationenvelope envelope = new soapserializationenvelope( soapenvelope.ver11); envelope.dotnet = true; envelope.xsd = soapserializationenvelope.xsd; envelope.enc = soapserializationenvelope.enc; (new marshalhashtable()).register(envelope); httptransportse androidhttptransport = new httptransportse( "http://tempuri.org/", 15000); androidhttptransport.debug = true; string result = ""; try { soapobject request = new soapobject("http:...
Read more

python - How to remove the Xframe Options header in django? -

i have made page has iframe . inside iframe want show multiple different links article facebook, or news, or youtube video or other possible url. but, due xframe header, unable so. referred following link: https://docs.djangoproject.com/en/1.8/ref/clickjacking/ , django xframeoptionsmiddleware (x-frame-options) - allow iframe client ip but didn't help. my settings.py file's middleware_classes is: middleware_classes = ( 'django.contrib.sessions.middleware.sessionmiddleware', 'django.middleware.common.commonmiddleware', 'django.middleware.csrf.csrfviewmiddleware', 'django.contrib.auth.middleware.authenticationmiddleware', 'django.contrib.auth.middleware.sessionauthenticationmiddleware', 'django.contrib.messages.middleware.messagemiddleware', 'django.middleware.clickjacking.xframeoptionsmiddleware', ) from http://django-secure.readthedocs.org/en/latest/middleware.html , found using ...
Read more