oracle - Trouble With Basic Query Searching -


not sure if right place ask have question beginner sql.

i have table dept , emp include:

sql> desc dept;  name                                      null?    type  ----------------------------------------- -------- ----------------------   deptno                                             number(2)  dname                                              varchar2(14)  loc                                       not null varchar2(13)  sql> desc emp;  name                                      null?    type  ----------------------------------------- -------- ----------------------   empno                                              number(4)  ename                                              varchar2(10)  job                                                varchar2(9)  mgr                                                number(4)  hiredate                                           date  sal                                                number(7,2)  comm                                               number(7,2)  deptno                                             number(2)

i need search jobs in department 30 , include location of department 30.

what im trying this:

sql> select emp.job, dept.deptno, dept.loc   2  emp, dept   3  emp.deptno = dept.deptno   4  deptno = '30'; deptno = '30' * error @ line 4: ora-00933: sql command not ended

but can see not working , have tried different variations still no luck. on right track? how solve this?

it sounds want this. when have multiple conditions in where clause, specify where once , combine them and or or conditions.

select emp.job, dept.deptno, dept.loc  emp, dept emp.deptno = dept.deptno   , dept.deptno = 30;

unless there reason need use old join syntax, ought start sql 99 syntax. makes easier move between databases, makes queries easier read separating join , filter conditions, , makes life easier when start working on outer joins.

select emp.job, dept.deptno, dept.loc  emp        join dept         on( emp.deptno = dept.deptno ) dept.deptno = 30;

Comments

Post a Comment

Popular posts from this blog

javascript - jQuery: Add class depending on URL in the best way -

i have html progress meter: <div class="col-md-3" style="margin-left: -20px;"> <div class="progress-pos active" id="progess-1"> <div class="progress-pos-inner"> login </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-2"> <div class="progress-pos-inner"> scan items </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-3"> <div class="progress-pos-inner"> confirm address </div> </div> </div> <div class="col-md-3 progress-pos-container"> <div class="progress-pos" id="progess-4"> <div class="progress-pos-in
Read more

caching - How to check if a url path exists in the service worker cache -

i need check if particular url path exists in service worker cache. example, suppose url is: /myserviceworker/service?a=110&b=70 this url exists in cache, there many of them different values of , b. now, suppose want refresh of these urls, how can that? i want know how access key values service worker cache. if know key, plan follows: var url = new url(key); if(url.pathname === "\/myserviceworker/service") refetch key but not sure how cache key , in format is. mean, string or url? cache api has match() method returns promise resolving in response object if match or undefined if no match exists. second parameter object can specify ignoresearch not take account url parameters. the ignoresearch option supported firefox ( chrome status here ). in other hand, retrieve cache entries, can use keys() method.
Read more

Redirect to a HTTPS version using .htaccess -

i need modify .htaccess file redirect urls https version without "www". http://example.com --> https://example.com http://www.example.com --> https://example.com https://www.example.com --> https://example.com this how .htaccess file looks like: rewriteengine on rewritecond %{request_filename} !-d rewritecond %{request_filename} !-f rewriterule ^(.*)$ redirect.php?id=$1&page=$2 [qsa,l] what modifications need make .htaccess in order forward https without "www"? it depends on doing current code. looks file called redirect trying display php page seo friendly url. think might confusing people. anyway, need , force https without www, need 1 more rule above. also second rule needs two capture groups in rewriterule test string because wanting 2 different values using $1 , $2 references. rewriteengine on #rediect www non www and/or http https --- combinations. rewritecond %{http_host} !^example\.com [nc,or] rewritecond %{https} !^
Read more