oracle-sqldeveloper

问题 I want the desc table; operation to show the comments of the columns. I have seen that some people achieved this, however I could not find out how. Maybe it depends on the SQL Developer version, mine is 2.1.0.63. Database is Oracle 11g. This is what I get when doing desc table; : Desc table; Name Nullable Type ------------------- -------- ----- ID NOT NULL NUMBER(38) ITEM_ID NUMBER(38) And I would like to get something like this: Desc table; Name Nullable Type Comment ------------------- ----

问题 I want the desc table; operation to show the comments of the columns. I have seen that some people achieved this, however I could not find out how. Maybe it depends on the SQL Developer version, mine is 2.1.0.63. Database is Oracle 11g. This is what I get when doing desc table; : Desc table; Name Nullable Type ------------------- -------- ----- ID NOT NULL NUMBER(38) ITEM_ID NUMBER(38) And I would like to get something like this: Desc table; Name Nullable Type Comment ------------------- ----

问题 I am deploying pl/sql code using several sql files that are called with @@file . If a package got a compilation error the script continues to the end. Is there a way to stop on every compilation error? I tried WHENEVER SQLERROR EXIT SQL.SQLCODE but the script still continues. 回答1: No native sql*plus way I'm aware of. Only workarounds. Like this: 20:42:50 TEST@oars_sandbox> get scr 1 whenever sqlerror exit rollback 2 create or replace procedure my_failed_proc as 3 i number; 4 begin 5 select 1

问题 I am deploying pl/sql code using several sql files that are called with @@file . If a package got a compilation error the script continues to the end. Is there a way to stop on every compilation error? I tried WHENEVER SQLERROR EXIT SQL.SQLCODE but the script still continues. 回答1: No native sql*plus way I'm aware of. Only workarounds. Like this: 20:42:50 TEST@oars_sandbox> get scr 1 whenever sqlerror exit rollback 2 create or replace procedure my_failed_proc as 3 i number; 4 begin 5 select 1

问题 Input: Hi,,How are you? Fine, thanks ,, , ,,,, , James,Arden. I would like to replace all consecutive commas with a single comma and a space. The output should be: Hi, How are you? Fine, thanks, James,Arden. SELECT REGEXP_REPLACE('Hi,,How are you? Fine, thanks ,, , ,,,, , James,Arden.', ',,+', ', ') FROM DUAL; I haven't tested it yet as I don't have access to the Oracle system yet. 回答1: More simple solution with same output: Hi, How are you? Fine, thanks, James, Arden. @Joseph B: Sorry I can

问题 I'm connected to an IBM DB2 database using Oracle SQL Developer and I'm querying several tables in order to perform an automated extraction of data. The issue here is that I can't set aliases for my results. I tried a lot of variants like adding quotes ("") ([]) ('') and it's not working. I saw several tutorials and everyone uses "AS" only, but for me it's not working. Any recommendations? Thanks! Image as example here : https://i.stack.imgur.com/5NrED.png My code is: SELECT "A"."TC_SHIPMENT

问题 I try to do some stuff wie object relational Databases. I have Oracle Express and the SQL Developer. Everything works fine. I can create my own, custom types and insert some rows. The problem is that it would not be display right. I think it is normally because they should be display object/types in a column... Is there a solution to display the objects in the columns? This is my code. p.s. i am from germany. ANSCHRIFT_T is a type for an address with name of the tress (Strasse) and house

问题 I've got 2 columns in a database of type TIMESTAMP(6) WITH TIME ZONE. I've subtracted one from the other to get the time between the two timestamps. select lastprocesseddate-importeddate from feedqueueitems where eventid = 2213283 order by written desc; How can I get an average of the list of time differences I have? Here are a small sample of time differences: +00 00:00:00.488871 +00 00:00:00.464286 +00 00:00:00.477107 +00 00:00:00.507042 +00 00:00:00.369144 +00 00:00:00.488918 +00 00:00:00

问题 I am a little new at setting up this Oracle Stuff so hopefully you bear with me. I installed Oracle on my personal laptop and have verified running from the command prompt that it works fine. I connected using SYS as the user id and I was able to login fine I installed SQL developer as well How do I setup a connection from SQL developer to Oracle? I did read the manual. What are the parameters that need to be given for the connection, the user name and the password in case I need to connect

问题 I have a materialized view and I used some joins for it's statement. And now I have a refresh problem with it. It takes too long time (even more than an hour). I want to have all data but refresh last 2 day's data. Is there any solution for my problem? thanks. 回答1: To improve the performance of your query try google for "improving query performance". There are a few tips you might want to know. (or I could suggest you some if you want) IF and only if the performance of your query cannot be