DML refers to Data Manipulation Statements. That is used for accessing and modifying values or data present in the database.
The commands that come in the category of DML in SQL
- INSERT
- SELECT
- DELETE
- UPDATE
INSERT:
This command is used to insert rows into the table.
SYNTAX:
INSERT INTO tablename VALUES (value,value,….);
SELECT:
This is used to select values or data from table
SYNTAX:
SELECT column name1, column name2, …. FROM tablename;
If we want to select all column values from a table then SQL command use is
SELECT * from tablename ;
DELETE:
In order to delete rows from a table we use this command
SYNTAX:
DELETE FROM tablename WHERE condition;
Based on the condition specified the rows gets fetched from the table and gets deleted in table. Here the WHERE clause is optional.
UPDATE:
This SQL command is used to modify the values in an existing table.
SYNTAX:
UPDATE tablename SET columnname = value, columnname = value,….. WHERE condition;
The rows which satisfies the WHERE condition are fetched and for these rows the column values we placed in command above in SET statement gets updated.
What are the commands that come in the category of DML in SQL?
DML refers to Data Manipulation Statements. That is used for accessing and modifying values or data present in the database.
The commands that come in the category of DML in SQL
INSERT:
This command is used to insert rows into the table.
SYNTAX:
INSERT INTO tablename VALUES (value,value,….);
SELECT:
This is used to select values or data from table
SYNTAX:
SELECT column name1, column name2, …. FROM tablename;
If we want to select all column values from a table then SQL command use is
SELECT * from tablename ;
DELETE:
In order to delete rows from a table we use this command
SYNTAX:
DELETE FROM tablename WHERE condition;
Based on the condition specified the rows gets fetched from the table and gets deleted in table. Here the WHERE clause is optional.
UPDATE:
This SQL command is used to modify the values in an existing table.
SYNTAX:
UPDATE tablename SET columnname = value, columnname = value,….. WHERE condition;
The rows which satisfies the WHERE condition are fetched and for these rows the column values we placed in command above in SET statement gets updated.
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