PostgreSQL – Expressions An expression is a combination of one or more values, operators, and PostgresSQL functions that evaluate to a value. PostgreSQL EXPRESSIONS are like formulas and they are written in query language. You can also use to query the database for specific set of data. Syntax Consider the basic syntax of the SELECT […]
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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, […]
PostgreSQL – SELECT Query PostgreSQL SELECT statement is used to fetch the data from a database table, which returns data in the form of result table. These result tables are called result-sets. Syntax The basic syntax of SELECT statement is as follows − SELECT column1, column2, columnN FROM table_name; Here, column1, column2…are the fields of […]