NOTE: SQL commands are not case sensitive. The above SELECT statement can also be written as"select first_name from students_details;" You can also retrieve data from more than one column. For example, to select
The SQLINSERT INTO SELECTstatement is used to copy records from one table to another existing table. Example -- copy data to an existing tableINSERTINTOOldCustomersSELECT*FROMCustomers; Run Code Here, the SQL command copies all records from theCustomerstable to theOldCustomerstable. INSERT INTO S...
Here, the SQL command selects theageandcountrycolumns of all the customers whosecountryisUSA. Example: SQL SELECT with WHERE We can also use theWHEREclause with theUPDATE statementto edit existing rows in a database table. Note:In SQL, we must enclose textual data inside either single or do...
The SQL SELECT statement includes other appropriate clauses based on your entries in the FROM clause (table name), WHERE clause, and Other clauses fields in the SQL Clauses window. For example, you can specify values to complete the following tasks: Select the columns Name, Add...
credit_limit *1.1new_credit_limitFROMcustomers;Code language:SQL (Structured Query Language)(sql) Try it Output: In this example, we use theSELECTstatement to retrieve data from thenameandcredit_limitcolumns of thecustomerstable. We also transform the values in thecredit_limitcolumn by multiplying...
In the following example, theINTOclause in the secondSELECTstatement specifies that the table namedProductResultsholds the final result set of the union of the designated columns of theProductModelandGlovestables. TheGlovestable is created in the firstSELECTstatement. ...
Example Return all the columns from the Customers table: SELECT*FROMCustomers; Try it Yourself » Video: SQL SELECT Statement ❮ PreviousNext ❯ Track your progress - it's free! Log inSign Up
For example, to show the first and last name of all employees, your query would start like this: SELECTfirst_name,last_name... Note: SQL is not case sensitive, but to stick to a consistent coding standard and to make the code more readable, I like to capitalise SQL keywords and lowerc...
對於靜態 SELECT 陳述式 (SQL 程式中內嵌的陳述式) ,必須在 FROM 子句之前指定 INTO 子句。 處理空值 空值表示列中沒有直欄值。 空值是不明值; 它與零或全部空白不同。 SQL 陳述式中的特別暫存器 您可以在 SQL 陳述式中指定某些特別暫存器。特別暫存器(例如 CURRENT DATE) 包含可在 SQL 陳述式中參照的資訊...
The SQL SELECT INTO StatementThe SELECT INTO statement copies data from one table into a new table.SELECT INTO SyntaxCopy all columns into a new table:SELECT * INTO newtable [IN externaldb] FROM oldtableWHERE condition; Copy only some columns into a new table:...