If you want to select N random records from a SQLite table, you need to change the clause as follows: select * from tableName order by RANDOM() limit N For example, to select 5 random customers in the customers table, you use the following query: select * from customers order by RANDOM() limit ... Read more
How to select N random records from a DB2 table
If you want to select N random records from a DB2 table, you need to change the clause as follows: select * from tableName order by rand() fetch first N rows only For example, to select 5 random customers in the customers table, you use the following query: select * from customers order by rand() ... Read more
How to select N random records from a PostgreSQL table
If you want to select N random records from a PostgreSQL table, you need to change the clause as follows: select * from tableName order by random() limit N For example, to select 5 random customers in the customers table, you use the following query: select * from customers order by random() ... Read more
How to select N random records from a SQL Server table
If you want to select N random records from a SQL Server table, you need to change the clause as follows: select top N * from tableName order by newid() For example, to select 5 random customers in the customers table, you use the following query: select top 5 * from customers order by ... Read more
How to select N random records from a MySQL table
If you want to select N random records from a MySQL table, you need to change the clause as follows: select * from tableName order by rand() limit N For example, to select 5 random customers in the customers table, you use the following query: select * from customers order by rand() limit 5 Some ... Read more
How to select N random records from an Oracle table
If you want to select N random records from an Oracle table, you need to change the clause as follows: select * from ( select* from tableName order by dbms_random.value ) where rownum <= N; For example, to select 5 random customers in the customers table, you use the following ... Read more
Some data import / export tools for MariaDB
Withdata Software provide some tools for MySQL, all these tools can work for MariaDB: See how to use these tools work for MariaDB: Import XML data into MariaDB (MySQL) Schedule and automate MariaDB (MySQL) importing XML data task Import data into MariaDB (MySQL) from MongoDB exported JSON ... Read more
Schedule and automate data file converting task
Want to schedule and automate data file format converting task? Using Data File Converter, a desktop tool, you can scheduled data file format converting task easily, just a few mouse clicks! Let computer automate repetitive data file format converting busy work, Data File Converter make our life ... Read more
How to get index column names of a table from Oracle
SELECT i.index_name,c.column_name FROM user_ind_columns c, user_indexes i where c.index_name=i.index_name and c.table_name=i.table_name and i.TABLE_NAME='my_table_name' and i.TABLE_OWNER='my_schema_name' See also: How to get index column names of a table from DB2 How to get index column names of ... Read more
How to get index column names of a table from SQLite
select sql from sqlite_master where tbl_name='my_table_name' and type='index' you can find the index name and column names in ‘sql’ field. See also: How to get index column names of a table from DB2 How to get index column names of a table from SQL Server How to get index column names ... Read more