Category Archives: postgresql

Khóa học miễn phí PostgreSQL – Constraints nhận dự án làm có lương

PostgreSQL – CONSTRAINTS Constraints are the rules enforced on data columns on table. These are used to prevent invalid data from being entered into the database. This ensures the accuracy and reliability of the data in the database. Constraints could be column level or table level. Column level constraints are applied only to one column […]

Khóa học miễn phí PostgreSQL – Insert Query nhận dự án làm có lương

PostgreSQL – INSERT Query The PostgreSQL INSERT INTO statement allows one to insert new rows into a table. One can insert a single row at a time or several rows as a result of a query. Syntax Basic syntax of INSERT INTO statement is as follows − INSERT INTO TABLE_NAME (column1, column2, column3,…columnN) VALUES (value1, […]