The tables to dynamically build a query to capture the row count from each of the The T-SQL query below uses the COALESCE() function to iterate through each of UNION ALL to combine the results and run the entire query. In this approach we will build a query to get the row count from each of the individual Stored procedure and may change anytime without prior notification from Microsoft.įunction is used to return the first non-NULL value/expression among its arguments. sp_MSforeachtable is an undocumented system

This approach can be used for testing purposes but it is not recommendedįor use in any production code.

sp_MSforeachtable is an undocumented system stored procedure.

Individual tables, puts them together and displays the results for all the tables.

This is an iterative approach which captures the row count for each of the.

Through each of the tables to capture the row count for all the tables in a database.ĭECLARE TABLE ( VARCHAR(128), INT) ĮXEC sp_MSforeachtable 'SELECT ''?'', COUNT(*) FROM ?' The T-SQL query below uses the sp_MSforeachtable system stored procedure to iterate The row counts from each of the tables in a given database in an iterative fashionĪnd display the record counts for all the tables at once. To iterate through each of the tables in a database. Sp_MSforeachtable is an undocumented system stored procedure which can be used Approach 3: sp_MSforeachtable System Stored Procedure Management View/Function which is being queried. VIEW SERVER STATE or VIEW DATABASE STATE permissions based on the In general, querying the Dynamic Management Views (DMVs), requires Or when an object/partition is dropped and recreated.

The values in the sys.dm_db_partition_stats DMV are reset on server restart.

VIEW DATABASE STATE permissions are required in the database.

INNER JOIN sys.dm_db_partition_stats AS sdmvPTNSīelow are the highlights of this approach: QUOTENAME(SCHEMA_NAME(sOBJ.schema_id)) + '.' + QUOTENAME(sOBJ.name) AS

The T-SQL query below uses the sys.partitions catalog view to capture the row Every table in SQL Server contains at least one partition (default partition)Įven if the table is not explicitly partitioned. Of each of the tables and most types of indexes (Except Fulltext, Spatial, and XML Sys.partitions is an Object Catalog View and contains one row for each partition sp_MSforeachtable System Stored Procedure.sys.dm_db_partition_stats Dynamic Management View (DMV).Let's take a look at each of the approaches: To get the row counts from all the tables in a SQL Server database. In this tip we will see four different approaches Hence any script/solution which can get the row count informationįrom all the tables in a database can be really helpful and effective thereby considerably As we’ve seen, both approaches will yield the same result.To validate the row counts between source and target databases as part of theĬount from each table one by one and comparing and consolidating the results canīe a tedious task. It’s recommended that you pass in a primary key column or the * character to the COUNT function to count the number of rows in a table. Here’s an example of counting the number of rows for a column that has NULL values: This will count all rows, including those with a value of NULL in any column. Of course, to count all rows, you can instead pass in the asterisk character as the argument to COUNT. Since id is the primary key of our table-and therefore has unique and non- NULL values-it’s a good candidate for counting the total number of rows in the table. This function takes the name of the column as its argument (e.g., id) and returns the number of rows for this particular column in the table (e.g., 5).Īs mentioned above, when you specify a column instead of the asterisk, the function will only count non- NULL values. Use the COUNT aggregate function to count the number of rows in a table. In this case, COUNT(id) counts the number of rows in which id is not NULL. Instead of passing in the asterisk as the argument, you can use the name of a specific column: Solution:ĬOUNT(*) counts the total number of rows in the table:

Our database has a table named pet with data in the following columns: id, eID (electronic identifier), and name.

You’d like to determine how many rows a table has.

Mysql count rows in all tables