Row/records counts for all tables (edit)

How to fetch the row count for all tables in a SQL SERVER database

https://www.codeproject.com/Tips/1058154/How-to-Count-All-Tables-Rows-and-Rows-Per-Table

https://www.mssqltips.com/sqlservertip/2537/sql-server-row-count-for-all-tables-in-a-database/ (HAY HAY HAY)

https://blog.sqlauthority.com/2017/05/24/sql-server-find-row-count-every-table-database-efficiently/

Listing all tables in a database and their row counts and sizes

(Table Row Count)

https://dataedo.com/kb/query/sql-server/list-of-tables-by-their-size (Table Size)

SQL Server 2005

SELECT 
    t.NAME AS TableName,
    i.name as indexName,
    p.[Rows],
    sum(a.total_pages) as TotalPages, 
    sum(a.used_pages) as UsedPages, 
    sum(a.data_pages) as DataPages,
    (sum(a.total_pages) * 8) / 1024 as TotalSpaceMB, 
    (sum(a.used_pages) * 8) / 1024 as UsedSpaceMB, 
    (sum(a.data_pages) * 8) / 1024 as DataSpaceMB
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
INNER JOIN 
    sys.allocation_units a ON p.partition_id = a.container_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, p.[Rows]
ORDER BY 
    object_name(i.object_id) 

SQL Server - Solution 1

SELECT sc.name +'.'+ ta.name TableName
 ,SUM(pa.rows) RowCnt
 FROM sys.tables ta
 INNER JOIN sys.partitions pa
 ON pa.OBJECT_ID = ta.OBJECT_ID
 INNER JOIN sys.schemas sc
 ON ta.schema_id = sc.schema_id
 WHERE ta.is_ms_shipped = 0 AND pa.index_id IN (1,0)
 GROUP BY sc.name,ta.name
 ORDER BY SUM(pa.rows) DESC

SQL Server - Solution 2

CREATE TABLE #counts
(
    table_name varchar(255),
    row_count int
)
EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?'
SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC
DROP TABLE #counts

MySQL - Solution 1

SELECT table_name, table_rows FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'retain';

MySQL - Solution 2

Select
 -- Sort the tables by count
 concat(
 'select * from (',
 -- Aggregate rows into a single string connected by unions
 group_concat(
 -- Build a "select count(1) from db.tablename" per table
 concat('select ',
 quote(db), ' db, ',
 quote(tablename), ' tablename, '
 'count(1) "rowcount" ',
 'from ', db, '.', tablename)
 separator ' union ')
 , ') t order by 3 desc')
into @sql
from (
 select
 table_schema db,
 table_name tablename
 from information_schema.tables
 where table_schema not in
 ('performance_schema', 'mysql', 'information_schema')
) t;

PostgreSQL

https://www.periscopedata.com/blog/exact-row-counts-for-every-database-table

SELECT 
  nspname AS schemaname,relname,reltuples
FROM pg_class C
LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
WHERE 
  nspname NOT IN ('pg_catalog', 'information_schema') AND
  relkind='r' 
ORDER BY reltuples DESC;

SELECT schemaname,relname,n_live_tup FROM pg_stat_user_tables ORDER BY n_live_tup DESC;