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How do I count the number of rows in multiple tables?
To achieve this for multiple tables, use the UNION ALL. select sum(variableName. aliasName) from ( select count(*) as yourAliasName from yourTableName1 UNION ALL select count(*) as yourAliasName from yourTableName2 ) yourVariableName; Let us implement the above syntax.
How can I get row count for all tables in SQL Server?
Let’s start coding.
- SELECT TOP 10 (SCHEMA_NAME(A.schema_id) + ‘.’ + A. Name) AS TableName.
- , SUM(B. rows) AS RecordCount.
- FROM sys.objects A.
- INNER JOIN sys.partitions B ON A.object_id = B.object_id.
- WHERE A.type = ‘U’
- GROUP BY A.schema_id, A. Name.
How do I count a specific row in SQL?
To counts all of the rows in a table, whether they contain NULL values or not, use COUNT(*). That form of the COUNT() function basically returns the number of rows in a result set returned by a SELECT statement.
How to get the rows count in SQL Server?
There are many ways available in SQL server to get the rows count of each table in SQL server but it would be wise if we find the row count of the table with out writing a query against that table.
How to select count ( * ) from two different tables?
How can I select count (*) from two different tables (call them tab1 and tab2) having as result: As additional information, to accomplish same thing in SQL Server, you just need to remove the “FROM dual” part of the query. It gives the answers transposed (one row per table instead of one column), otherwise I don’t think it’s much different.
Why do I need to check row count in ETL?
It is a common step in any ETL project to validate the row counts between source and target databases as part of the testing phase. Getting the row count from each table one by one and comparing and consolidating the results can be a tedious task.
How to iterate through all tables in a database?
In general, querying the Dynamic Management Views (DMVs), requires VIEW SERVER STATE or VIEW DATABASE STATE permissions based on the Dynamic Management View/Function which is being queried. sp_MSforeachtable is an undocumented system stored procedure which can be used to iterate through each of the tables in a database.