Display the name of employees who have joined in and salary is greater than ? We cannot use dual table to display output given above. To display output use any table. I am using Student table. Tip: User needs to know the concept of Hierarchical queries. Click here to get concept of hierarchical queries.
How to remove duplicate rows from table? Tip: Use concept of max rowid of table. Click here to get concept of rowid. How to find count of duplicate rows? New material covers more information. Author: Philip Greenspun. The statements which defines the structure of a database, create tables, specify their keys, indexes and so on.
Want to get certified in SQL! With this, we come to an end of SQL commands Cheat sheet. Still have queries? Skip to content. Master Most in Demand Skills Now! Database Query Pdf Still have queries? It is an keyword in SQL that is used to rename a column or table using an alias name. It is an keyword in SQL that is used to rename a column or table using an alias name.
It is a function that takes the name of a column as argument and counts the number of rows when the column is not NULL. It is used to create a new table in a database and specify the name of the table and columns inside it. It is a function that takes number of columns as an argument and return the largest value among them. It is a function that takes number of columns as an argument and return the smallest value among them.
It is an operator that is used to filter the result set to contain only the rows where either condition is TRUE. It is a clause used to sort the result set by a particular column either numerically or alphabetically. It is a function that takes the column name and a integer as an argument, and rounds the values in a column to the number of decimal places specified by an integer. It is used to specify that the statement is a query which returns unique values in specified columns.
It is a clause used to filter the result set to include the rows which where the condition is TRUE.
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