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Row count for all tables

January 8, 2019 14:01

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/

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;

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