In my SQL script I am using one database(Lets assume MyDb1).
In side that script I need to query extended property of another DB (MyDb2).
I have no Idea to do this.
Please advise me.
You can use this Query :
SELECT * FROM MyDb1.DBO.TableName as tbl1,MyDb2.DBO.TableName as tbl2
WHERE tbl1.ID=tbl2.ID
Related
Hello for demonstration purposes I trimmed out my actual sql query.
I have a SQL query
SELECT *
FROM dbdev.training.courses
where dbdev is my DEV database table name. When I migrate to TEST env, I want my query to dynamically change to
SELECT *
FROM dbtest.training.courses
I tried using input parameters like {env: p('db_name')} and using in the query as
SELECT * FROM :env.training.courses
or
SELECT * FROM (:env).training.courses
but none of them worked. I don't want my SQL query in properties file.
Can you please suggest a way to write my SQL query dynamically based on environment?
The only alternative way is to deploy separate jars for different environments with different code.
You can set the value of the property to a variable and then use the variable with string interpolation.
Warning: creating dynamic SQL queries using any kind of string manipulation may expose your application to SQL injection security vulnerabilities.
Example:
#['SELECT * FROM $(vars.database default "dbtest").training.courses']
Actually, you can do a completely dynamic or partially dynamic query using the MuleSoft DB connector.
Please see this repo:
https://github.com/TheComputerClassroom/dynamicSQLGETandPATCH
Also, I'm about to post an update that allows joins.
At a high level, this is a "Query Builder" where the code that builds the query is written in DataWeave 2. I'm working on another version that allows joins between entities, too.
If you have questions, feel free to reply.
One way to do it is :
Create a variable before DB Connector:
getTableName - ${env}.training.courses
Write SQL Query :
Select * from $(getTableName);
How do I query the database name in Oracle SQL Developer? I have tried the following and they all fail:
SELECT DB_NAME();
SELECT DATABASE();
Why do these basic MySQL queries fail in SQL Developer? Even this one fails too:
show tables;
EDIT: I can connect to the database and run queries such as:
select * from table_name_here;
EDIT 2: The database type is Oracle, this is why MySQL queries are failing. I thought it was related to the database client not the database itself. I was wrong. I'll leave the question as is for other as lost as I was.
Once I realized I was running an Oracle database, not MySQL, I found the answer
select * from v$database;
or
select ora_database_name from dual;
Try both. Credit and source goes to: http://www.perlmonks.org/?node_id=520376.
try this:
select * from global_name;
You can use the following command to know just the name of the database without the extra columns shown.
select name from v$database;
If you need any other information about the db then first know which are the columns names available using
describe v$database;
and select the columns that you want to see;
I know this is an old thread but you can also get some useful info from the V$INSTANCE view as well. the V$DATABASE displays info from the control file, the V$INSTANCE view displays state of the current instance.
Edit: Whoops, didn't check your question tags before answering.
Check that you can actually connect to DB (have the driver placed? tested the conn when creating it?).
If so, try runnung those queries with F5
To see database name,
startup;
then type
show parameter db_name;
DESCRIBE DATABASE NAME; you need to specify the name of the database and the results will include the data type of each attribute.
is there a way to actually query the database in a such a way to search for a particular value in every table across the whole database ?
Something like a file search in Eclipse, it searches accross the whole worspace and project ?
Sorry about that .. its MS SQL 2005
SQL Workbench/J has a built in tool and command to do that.
It's JDBC based and should also work with SQL Server.
You will need to use the LIKE operator, and search through each field separately. i.e.
SELECT * FROM <table name>
WHERE (<field name1> LIKE '%<search value>%') OR
(<field name2> LIKE '%<search value>%') OR
... etc.
This isn't a quick way though.
I think the best way would be to
1) programatically generate the query and run it
2) use a GUI tool for the SQL server you are using which provides this functionality.
In mysql you can use union operator like
(SELECT * from table A where name = 'abc') UNION (SELECT * from
table B where middlename = 'pqr')
and so on
use full text search for efficency
http://dev.mysql.com/doc/refman/5.0/en/fulltext-search.html
Well, your best bet is to write a procedure to do this. But to give you some pointers you can use the INFORMATION_SCHEMA.Tables to get a list of all the tables in a given database and INFORMATION_SCHEMA.Columns to get a list of all columns. These tables also give you the datatype of columns. So you will need a few loops on these tables to do the magic.
It should be mentioned most RDBMSs nowadays support these schemas.
In phpmyadmin, go to your database, reach the search tab.
Here you will be able to select all of your tables and search through your entire db in one time.
I have a storedproc which has multiple select statement.
When it is executed in sql server , it returns multiple tables.
I need a query which will select a particular table from the storedproc e.g. sp_help.
Please help.
If i have a look at this link, it seems that it is not possible.
Astander is right. From the number of tables available in ur SP, it is not possible directly.
However, you can apply some trick to accomplish your work. I am giving an example here. May be you can generate some idea based on this line.
SELECT * FROM sys.Tables where name =
'my_tbl'
As you can make out that I am filtering out the query by a table among all the tables available in my database.
Something of this sort may help you.
Else, if can get the dataset and then from that get the needed datatable from ur frontend code.
I've got two databases on the same server. The Google gave me some hints but there wasn't anything "official" that I could find. Could someone point me to the documentation that explains how to do this? An explanation using PHP would be useful as well. Thanks!
I've got two databases on the same server. ...How do I construct a cross database query in MySQL?
You access other databases on the same MySQL instance by prefixing the table with the appropriate database name. IE:
SELECT *
FROM this_database.table_1 t1
JOIN that_database.table_2 t2 ON t2.column = t1.column
Keep in mind
A query executes with the credentials of the authentication used to set up the
connection. If you want to query two tables simultaneously across two (or more)
databases, the user used to run the query will need SELECT access to all
databases involved.
Reference:
Identity Qualifiers
SELECT * FROM DB1.myTable1 AS db1, DB2.myTable2 AS db2
http://www.dottedidesign.com/node/14 provides the following example:
SELECT
arbogast.node.nid as anid,
mcguffin.node.nid as mnid,
arbogast.node.title as atitle,
mcguffin.node.title as mtitle
FROM arbogast.node, mcguffin.node
WHERE arbogast.node.nid = 1
AND mcguffin.node.nid = arbogast.node.nid;
Where arbogast and mcguffin are different databases.