How do I find the number of tables in a database?

How do I find the number of tables in a database?

To count the total number of tables, use the concept of count(*) with table_schema. First, to check how many tables are present in our database “business”, we need to use the ‘show’ command. mysql> show tables; The following is the output that displays all the tables in the database “business”.

How do I get list of all tables in an Oracle database?

The easiest way to see all tables in the database is to query the all_tables view: SELECT owner, table_name FROM all_tables; This will show the owner (the user) and the name of the table. You don’t need any special privileges to see this view, but it only shows tables that are accessible to you.

How do I find the number of tables in a SQL database?

INFORMATION_SCHEMA. TABLES returns one row for each table in the current database for which the current user has permissions. As of SQL Server 2008, you can also use sys. tables to count the the number of tables.

How do I count the number of tables in a schema?

This should do it: declare v_count integer; begin for r in (select table_name, owner from all_tables where owner = ‘SCHEMA_NAME’) loop execute immediate ‘select count(*) from ‘ || r. table_name into v_count; INSERT INTO STATS_TABLE(TABLE_NAME,SCHEMA_NAME,RECORD_COUNT,CREATED) VALUES (r. table_name,r.

How do I find the number of columns in a SQL table?

Here is the SQL query to count the number of columns in Employee table:

1. SELECT count (column_name) as Number. FROM information_schema.columns. WHERE table_name=’Employee’
2. SELECT column_name,table_name as Number. FROM information_schema.columns.
3. SELECT column_name,table_name as Number. FROM information_schema.columns.

How do I list all the tables in a schema?

The easiest way to find all tables in SQL is to query the INFORMATION_SCHEMA views. You do this by specifying the information schema, then the “tables” view. Here’s an example. SELECT table_name, table_schema, table_type FROM information_schema.

How can I get table record count in SQL Server?

Let’s start coding.

1. SELECT TOP 10 (SCHEMA_NAME(A.schema_id) + ‘.’ + A. Name) AS TableName.
2. , SUM(B. rows) AS RecordCount.
3. FROM sys.objects A.
4. INNER JOIN sys.partitions B ON A.object_id = B.object_id.
5. WHERE A.type = ‘U’
6. GROUP BY A.schema_id, A. Name.

How do you find the total number of rows in each table of the schema?

This can be achieved by using the following query. SELECT table_schema, SUM(row_count) AS total_rows FROM ( SELECT table_schema, count_rows_of_table(table_schema, table_name) AS row_count FROM information_schema.

How do I count two tables in SQL?

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 to get the number of tables in DBA?

Run this: SELECT TABLE_NAME FROM DBA_TABLES; to get list of tables. and Run this: SELECT Count(*) FROM DBA_TABLES; to get the count of tables. Share Improve this answer Follow

How to count rows in a schema in Oracle?

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:

Which is the real row count in SQL?

Row count at SQL execution time: The “real” current row count, which requires that you actually issue SQL to count the rows in all of the tables (time consuming). To count all of the rows in real time, a simple SQL*Plus script will suffice: