sql - query multiple tables and combine results into one return table for stored procedure? -

I have several different tables, but they have 2 columns that have the same names. I want to write a stored procedure. I am searching for a column in all tables and gives results. idea? When it comes to SQL, I am quite a lot.

The operation you are looking for is unions or unions All .

SELECT * WHERE all_tables.col1 = 'Something' If you use UNION ALL instead of UNION , then the database will expire duplicate rows that have multiple tables If you know that there will be no duplicate, use UNION ALL because it is usually very fast. Get link Facebook X Pinterest Email Other Apps Comments Post a Comment Popular posts from this blog windows - Heroku throws SQLITE3 Read only exception - - September 15, 2015 After I deploy the app to Heroku, I have to run migration scripts and get this error message ... ITES \ padrino \ prophetmargin & gt; Heroku Rack AR: Rack mutated! SQLite3 :: ReadOnlyException: only one try to write database to read: CREATE TABLE "schema_migrations" ( "version" varchar (255) NOT NULL) /disk1/home/slugs/215264_925fd2c_65a3/mnt/.bundle/gems/gems/ padrino-core- is 0.9.11 / lib / padrino-core / cli / rake.rb: 9: in `init ' how can this be? I also tried to run Heroku dbpush SQLite: //db/my-db.db and that did not work Horoku sqlite3 but using postgres does not do. I'm not sure why you are receiving this error, however, as I have used sqlite3 in development and when pushing it into its travel, they do some magic which migrates to postgrads. I'm absolutely sure how Heroku does 'backwash' this database but it seems that this is happening to you because it's the SQLite db file which is obviously due to Heroku's... Read more lex - Building a lexical Analyzer in Java - - September 15, 2015 I am currently learning lexical analysis in compiler design. To know how a lexical analyzer actually works, I am trying to build myself. I am planning to make it in Java The input to the lexical analyzer is a .tex file that is of the following format. \ section {script} {intro} \ section {Scope} arbitrary text \ section {relevance} uncontrolled text \ subdivision (profit) arbitrary text \ subsubsection {in real life} \ subdivision {Ingredient} \ end {document} The output of the lecture may be a table of contents with a page number in another file. 1 Introduction 1 1.1 Scope 1 1.2 Relevance 2 1.2.1 Benefits 2 1.2.1.1 Real life 2 1.2.2 loss 3 I hope that This problem is within the scope of Language Analysis Read the .exe file and check '\' and continue to check whether it is actually on search In the sectioning command is set to indicate whether or not a flag variable is the type of sectioning. I hope the above approach will work for the construction of Lexa... Read more python - rename keys in a dictionary - - February 15, 2015 I want to change the names of keys in a dictionary which are ints, and I need them so that the inputs with key zero They can sort correctly. For example, my keys are like this: '1', '101', '11' and I may need them: '001', '101', '011' What is doing, but I know that there is a better way tmpDict = {} in the ADC for the old: t MpDict ['% 04d'% int (olden)] = addict [oldkey] New controlled = tmpDict You are going wrong about this if you want to draw entries on a line in a specific way, then you have to sort on the extraction. for sorted (D, key = int): print '% s:% R'% (k, d [k]) Read more Powered by Blogger Theme images by Michael Elkan Unknown Visit profile Archive September 2015418 August 2015424 July 2015429 June 2015388 May 2015416 April 2015433 March 2015439 February 2015415 January 2015404 September 2014405 August 2014457 July 2014413 June 2014411 May 2014408 April 2014416 March 2014437 February 2014408 January 2014437 September 2013402 August 2013403 July 2013418 June 2013436 May 2013392 April 2013413 March 2013414 February 2013402 January 2013410 September 2012443 August 2012412 July 2012426 June 2012423 May 2012425 April 2012441 March 2012380 February 2012410 January 2012426 September 2011412 August 2011427 July 2011405 June 2011435 May 2011439 April 2011440 March 2011404 February 2011429 January 2011359 September 2010402 August 2010420 July 2010386 June 2010439 May 2010391 April 2010402 March 2010429 February 2010408 January 2010431 Show more Show less Report Abuse