Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 17 years of hands-on experience.He holds a Masters of Science degree and numerous database certifications. Does either 'messy' or 'untidy' necessarily imply 'dirty'? i am working on a online file browser, each directory has its own table. Instead of doing joins - is there syntax for me to basically say... "SELECT * FROM all tables. How to get only specific record from multiple tables? “sql server select all tables in a database” Code Answer’s. In this post, we will learn about how to get all tables records count from the selected database. Sorry mate but this sounds like a realy bad application desing. For example, extended events tables trace_xe_action_map and trace_xe_event_map . edited Sep 5 '10 at 13:47. Experts Exchange always has the answer, or at the least points me in the correct direction! How to list all tables from a schema of Oracle database. You don't need any special privileges to see this view, but it only shows tables that are accessible to you. One can only hope the name is similar, which is why you can use the like clause and throw in a few wild cards. How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL? Although in this the code I posted I'm trying to only get count(*), I would … collection of read-only tables that provide useful information about the database including schemas Output : Examples If you have administrator privileges, you can query the dba_tables view, which gives you a list of all tables in the database. Sometimes, you want to grant SELECT on all tables which belong to a schema or user to another user. 3. This view does not display the OWNER column. select table_name from dba_tab_columns where column_name = 'PICK_COLUMN'; Now if you’re like me, you may not even know what the column you’re searching for is really named. WHERE blah = 'whatever'. and how can I list the 20 last inserted data?? SELECT *FROMinformation_schema.tables Wel, there is one more way by which we can list all the tables in a database. Who is the true villain of Peter Pan: Peter, or Hook? And if there are about thousand files in each directory.. etc. The SELECT statement is used to select data from a database. I would recommend writing a view and then call that view instead (it will save you writing out the names every time) – VoodooChild. ','; } $ALL_TABLES = substr ($string,0,strlen ($string)-1); $sql="SELECT name FROM $ALL_TABLES "; Share. Points: 308. Is US Congressional spending “borrowing” money in the name of the public? First, specify the table where you want to get data from in the FROM clause. To gather statistics for this view, use the ANALYZE SQL statement. Show tables that are accessible by the current user To show all tables that are currently accessible by the current user, regardless of owners, you query from the all_tables view: SELECT table_name FROM all_tables ORDER BY table_name; You'll need to write out the query in full like. Making statements based on opinion; back them up with references or personal experience. Join Stack Overflow to learn, share knowledge, and build your career. DBA_TABLES describes all relational tables in the database. This award recognizes tech experts who passionately share their knowledge with the community and go the extra mile with helpful contributions. SELECT [ name ] … SP_MSFOREACHTABLE '(SELECT TOP 10 ''? Here we are using join sys.objects with sys.partitions from sys.partitions we can get row count of table and sys.objects will return the name of a schema (table name). That's easier said then done, as you have to drop each table individually. sysobjects WHERE xtype = 'U' order by name. https://www.experts-exchange.com/questions/28659544/Select-FROM-all-tables-MySQL.html. and find all result step by step in sql server: Please let us know if the problem is not resolved. Try for free Certain tables require privileges from the database DBA. Can I use multiple bicistronic RBS sequences in a synthetic biological circuit? This is a query to get all Oracle tables that can be viewed by the current user. To list all tables from a schema of Oracle database you can use tables: USER_TABLES, USER_ALL_TABLES, TABS, ALL_TABLES, DBA_TABLES, USER_OBJECTS. Select all tables from all databases using T-SQL; Post reply. and my solution didn't work cause when i tried to run "SELECT name FROM $ALL_TABLES " got this error"MySQL Error: #1052 - Column 'id' in field list is ambiguous" so i ended up making a search table with all files inside table and i just do a fulltext search on this table, i am working on a online file browser, each directory has its own table "files/pictures/,files/videos/,files/music/" and so on records in each table are the files details size name description and so on . Notice that you can have more than one table in the FROM clause. You could also get this. When queries get slow on a table of just 5K records (which is peanuts for, DrColossos- at the most i will have 50 tables and i didnt mean to say the queries were slow sorry My script was slow be cuz i had a scan.php script that would loop through all files in directory and subdirectories create a thumbnail for jpg and flv files then insert record into the files table this script would also check files in the files table with file_exists() if it didn't exist it would delete the record. 2. I'm not sure if this is possible or not, but I need to be able to SELECT * FROM all the tables in the database. When asked, what has been your best career decision? Can I concatenate multiple MySQL rows into one field? but now i scan 1 directory at a time, State of the Stack: a new quarterly update on community and product, Podcast 320: Covid vaccine websites are frustrating. and to be honest thinkin about it now im not sure why i decided to create a table for every directory, i guess it seem like a good idea at the time. etully. SELECT table_name FROM all_tables; SQL command to list all tables in PostgreSQL For PostgreSQL, you can use the psql command-line program to connect to the PostgreSQL database server and display all tables in a database. READ MORE. sql by Successful Stork on May 19 2020 Donate . How is a person residing abroad subject to US law? Output. '', * FROM ? I'm curious as to why you have lots of different tables with the same structure? I want to select from all tables without having to list them all like so: Is there a way to select all tables in a database without listing each table in the query? To see all tables that the current user can access, you can query the all_tables view. Computing Discrete Convolution in terms of unit step function. In some time you will either have slow processing while selecting from your database either have to buy more server resources. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. 7. how to get all table names in sql query . We help IT Professionals succeed at work. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Thanks for contributing an answer to Stack Overflow! In the following example we are selecting all the columns of the employee table. get the list of all tables in sql server . Select all tables from all databases using T-SQL. I still think you want to UNION each table together because specifying "table1,table2,table3" etc. New DM on House Rules, concerning Nat20 & Rule of Cool, Bug with Json payload with diacritics for HTTPRequest. This award recognizes authors who provide insightful, original works that bring value and awareness to the tech community. SELECT table_name FROM all_tables WHERE tablespace_name = 'EXAMPLE' ORDER BY … The problem is is that at the time I select the data, I do not necessarily know the names of all the tables, since they are created programatically and named based on information read from XML files. Being involved with EE helped me to grow personally and professionally. what can i do ? Get this interactive HTML data dictionary in minutes with Dataedo. SELECT table_name FROM all_tables ORDER BY table_name ASC; You can add the owner column to your view to see who owns the table: SELECT table_name, owner FROM all_tables ORDER BY table_name ASC; This may show you a lot of results, including a lot of system tables. Following simple demonstration to select … I've got a database I'm working with where there's an ever expanding number of tables - associated by a specific row (let's call it "blah"). Rootkit. select TABLE_NAME, OWNER from SYS.ALL_TABLES order by OWNER, TABLE_NAME The query can be filtered to return tables for a given schema by adding a where OWNER = 'some_schema' clause to the query. When your query is slow with 5000 records it's either time to do some indexing or re-thing your table structure. Here we are using sys.objects and sys.partitions for getting the record count. user_tables table does not have the owner column. First, connect to the PostgreSQL Database server: when you click the link the number should increase and be writen to the table at mysql. I've got a database I'm working with where there's an ever expanding number of tables - associated by a specific row (let's call it "blah"). originally i had all files listed in one table. MySQL - UPDATE query based on SELECT Query, mysqldump entire structure but only data from selected tables in a single command, Create a temporary table in a SELECT statement without a separate CREATE TABLE, Get table names using SELECT statement in MySQL. This query will return all the columns of tables present in ur DB . Old Hand. SELECT owner, table_name FROM all_tables; This will show the owner (the user) and the name of the table. Select * from ALL Tables. That means you should not have a lot of tables with same structure at all. Can I stabilize a character if I don't have proficiency in the Medicine skill or any healing equipment or abilities? Example to select from multiple tables : SELECT Geeks3.GID, Geeks3.PID, Geeks3.Asset, Geeks1.FirstName, Geeks2.LastName FROM Geeks3 LEFT JOIN Geeks1 ON Geeks3.GID = Geeks1.ID LEFT JOIN Geeks2 ON Geeks3.GID = Geeks2.ID . So here is script which will reduce your time and ad give you select * from (for all table ). WITH (NOLOCK))' You can also do a count and list all the tables whether they have rows or not with the below query SP_MSFOREACHTABLE '(SELECT COUNT(*), ''?'' To learn more, see our tips on writing great answers. More actions April … I have a lot of tables in my data base all with same structure. select table_name from user_tables; doesn't list my tables from PM_CMP_MODEL schema. We will discuss it in the subsequent tutorial. I have a need to select all the data from all the tables in a sql query. ALL_TABLES. I don't recommend this approach, but I have one hint for you: yeah ok i been up all night trying to get this right. Sounds like you want to UNION together each table, so you get the results as if they were one big table. but i had over 5,000 records and queries were slow, so now tables are automatically created every time i add a directory, records are automatically stored every time files are uploaded, now i tring to create a search function for users and i wanna search all directories or tables. To work around this, you can select all table names of a user (or a schema) and grant the SELECT … Pinal has authored 12 SQL Server database books and 37 Pluralsight courses. Scope of rows: all tables from all schemas and all databases on SQL Server instance; Ordered by database name, schema name, table name; Sample results. The data returned is stored in a result table, called the result-set. Since the amount of information returned when querying all columns is quite large, you may wish to trim the results by viewing only the name column and perhaps the crdate (date of creation): SELECT name, crdate FROM SYSOBJECTS WHERE xtype = 'U'; GO. WITH (NOLOCK))' To list all tables accessible to the current user. The most used tables are USER_TABLES and USER_OBJECTS. in a FROM clause implies you want to. FROM ? Were senior officals who outran their executioners pardoned in Ottoman Empire? Asking for help, clarification, or responding to other answers. Which languages have different words for "maternal uncle" and "paternal uncle"? I think you should change your database structure: just begin from adding parent_folder_id column to your table, after this you can put all your rows (files and directories -- because directory is a file too -- here you can add type column to determine this) into the one table. Connect with Certified Experts to gain insight and support on specific technology challenges including: We've partnered with two important charities to provide clean water and computer science education to those who need it most. rev 2021.3.12.38768, Sorry, we no longer support Internet Explorer, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, You probably need to do a union - your solution below can be tweaked to create a dynamic sql statement which goes like 'Select * from table1 union select * from table 2 union..'. Imagine you have a list of tables in your Oracle DB and you want to drop them all using a client like SQLDeveloper. sql by Nice Nightingale on May 19 2020 Donate . Script --Select ALL table from all column SELECT 'Select * from ' + name FROM sys. See live HTML data dictionary sample. It is like having another employee that is extremely experienced. But here's what I came up with: $tables = mysql_query ("show tables"); $string = ''; while ($table_data = mysql_fetch_row ($tables)) { $string.=$table_data [0]. mysql> SELECT * FROM employee; ALL_TABLES describes the relational tables accessible to the current user. Thanks! You have a serious flaw in your design. If you have tables with the same structure, you should realy consider of putting your data into one table! Code language: SQL (Structured Query Language) (sql) Even though the SELECT clause appears before the FROM clause, SQLite evaluates the FROM clause first and then the SELECT clause, therefore:. Are questions on theory useful in interviews? i have 2 problem. It is very unuseful due to one reason: when you have about 200 files (this situation is real, yeah?) I found a solution, but I would still like to know if there is a simpler way or a better solution. But just one table with a field to distinguish different kinds of data, whatever it is. you have about 200 tables. 1) I want to designe a link counter. Creating a table for each directory will be a more a performance problem than having a single table with proper index and design. mahisusan. This developer built a…, Checking time-stamps if they are from today in MySQL, MySQL Error 1093 - Can't specify target table for update in FROM clause. select owner, tablespace_name, table_name from dba_tables where owner='&schema'; Query for … The first female algebraist in US/Britain? Is there a possibility to keep variables virtual? USER_TABLES describes the relational tables owned by the current user. Changing Map Selection drawing priority in QGIS. 2) How can I list the informations at ALL TABLES at Mysql that order by the most clicked 100? Hi, Just Replace ur query with the below mention query. Connect and share knowledge within a single location that is structured and easy to search. You can generate SELECT by cursor like this code Select all columns of a table We use the SELECT * FROM table_name command to select all the columns of a given table. Understanding the behavior of C's preprocessor when a macro indirectly expands itself. Try using the code below to get top 10 from all tables that have rows. Write the following query in the query analyzer. How can I play QBasic Nibbles on a modern machine? This will return a result list of all user-created tables. SELECT table_name FROM user_tables; List all Tables in Oracle database, accessed by Current user: The below query lists all tables in oracle which are accessible by the current user. MS SQL: SELECT table_name=sysobjects.name, column_name=syscolumns.name, datatype=systypes.name, length=syscolumns.length FROM sysobjects JOIN syscolumns ON sysobjects.id = syscolumns.id JOIN systypes ON …