SQL-query that finds the table that contains most rows in the database
So as the title says i need a query that finds the table that contains most rows in my database.
I can show all my tables with this query:
select * from sys.tables
select * from sysobjects where xtype = 'U' order by name
And all the indexes with this query:
select * from sys.indexes
But how do i show the columns with most rows in the whole database?
Kind regards, Chris
I use this query usually to sort all tables by rowcount:
USE DATABASENAME SELECT t.NAME AS TableName, SUM(p.rows) AS RowCounts FROM sys.tables t INNER JOIN sys.indexes i ON t.OBJECT_ID = i.object_id INNER JOIN sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id WHERE t.NAME NOT LIKE 'dt%' AND i.OBJECT_ID > 255 AND i.index_id <= 1 GROUP BY t.NAME, i.object_id, i.index_id, i.name ORDER BY SUM(p.rows) desc
If you want only the firts just add
TOP 1 after
--in reply to your comment----
WHERE t.NAME NOT LIKE 'dt%' AND --exclude Database Diagram tables like dtProperties i.OBJECT_ID > 255 AND --exclude system-level tables i.index_id <= 1 -- avoid non clustered index
Listing all tables in a database and their row counts , To get the number of rows in a single table we usually use SELECT of listing all the tables that exist in a database together with the number of rows they contain. How to Find Tables that Contain a Specific Column in SQL Server Posted by AJ Welch While extremely powerful as a relational database, SQL Server can be somewhat daunting at times when it comes to looking up underlying information about the database system itself.
Using the answer to this question, you can run the following to see the table with the highest row count:
CREATE TABLE #counts ( table_name varchar(255), row_count int ) EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?' SELECT TOP 1 table_name, row_count FROM #counts ORDER BY row_count DESC DROP TABLE #counts
SQL Server Row Count for all Tables in a Database, I am a database tester and one of my tasks involves getting the row and contains one row for each partition of each of the tables and most Every table in SQL Server contains at least one partition (default http://www.bigator.com/2013/01/23/mssql-find-total-records-of-each-table-in-given-database/ Pinal Dave is a SQL Server Performance Tuning Expert and an independent consultant. He has authored 12 SQL Server database books, 32 Pluralsight courses and has written over 5000 articles on the database technology on his blog at a https://blog.sqlauthority.com. Along with 16+ years of hands-on experience he holds a Masters of Science degree and a number of database certifications.
You may also use this query to get no duplicates in table names:
Use[DataBase_Name] select max(i.rows) as recordCounts,t.name as table_name, SCHEMA_NAME(t.schema_id) as schema_name from sysindexes i inner join sys.tables t on i.id=object_id group by t.name, SCHEMA_NAME(t.schema_id)
SQL SERVER - Find Row Count in Table, SQL SERVER – Find Row Count in Table – Find Largest Table in Database – T-SQL or sometime I am even asked which table has highest number of rows. This script will gives row number for every table in database. Article for: SQL Server Azure SQL Database Oracle database MySQL PostgreSQL MariaDB IBM Db2 Amazon Redshift Snowflake Teradata Vertica This query returns list of tables in a database with their number of rows.
Find empty tables in SQL Server database, This query returns list of tables in a database without any rows. Query. select schema_name(tab.schema_id) + '.' + tab.name as [table] from 13 Answers 13. The following SQL will get you the row count of all tables in a database: The output will be a list of tables and their row counts. If you just want the total row count across the whole database, appending: will get you a single value for the total number of rows in the whole database.
SQL Server SELECT, In a table, data is logically organized in a row-and-column format which is similar to a For example, the customers table contains customer data such as customer SQL Server uses schemas to logically groups tables and other database objects. The following query finds the first name and last name of all customers:. How can I find the most frequent value in a given column in an SQL table? For example, for this table it should return two since it is the most frequent value: Add another 'three' row to the sample data, and specify the expected result. – jarlh Nov 18 '19 at 10:55. Replace column and my_table. Increase 1 if you want to see the N most common
Finding Tables that Contain a Specific Column in SQL Server, Find all tables in the database which contain a specific column in SQL Server only want to check for titles with the word “The”, adding a space is more appropriate: of course, only looking up records where sys.columns.name is equal to our num_rows counter from dba_tables where owner = 'XXX' order by table_name; You can also write PL/SQL procedures to count up the number of rows in a schema. Count each number of table rows . Oracle ACE Laurent Schneider has a more elegant solution for counting tables, using dbms_xmlgen to store the row counts for multiple tables in a single SQL query list: