cheat.sheets/sheets/_psql/select

# Query all data from a table
SELECT * FROM table_name;

Query data from specified columns of all rows in a table
SELECT column, column2... FROM table;

# Query data and select only unique rows
SELECT DISTINCT (column) FROM table;

# Query data from a table with a filter
SELECT * FROM table WHERE condition;

# Set an alias for a column in the result set
SELECT column_1 AS new_column_1, ...
FROM table;

# Query data using the LIKE operator
SELECT * FROM table_name
WHERE column LIKE '%value%'

# Query data using the BETWEEN operator
SELECT * FROM table_name
WHERE column BETWEEN low AND high;

# Query data using the IN operator
SELECT * FROM table_name
WHERE column IN (value1, value2,...);

# Constrain the returned rows with LIMIT clause
SELECT * FROM table_name
LIMIT limit OFFSET offset
ORDER BY column_name;

# Query data from multiple using the inner join, left join, full outer join, cross join and natural join:
SELECT * FROM table1 INNER JOIN table2 ON conditions
SELECT * FROM table1 LEFT JOIN table2 ON conditions
SELECT * FROM table1 FULL OUTER JOIN table2 ON conditions
SELECT * FROM table1 CROSS JOIN table2;
SELECT * FROM table1 NATURAL JOIN table2;

# Return the number of rows of a table.
SELECT COUNT (*)
FROM table_name;

# Sort rows in ascending or descending order
SELECT column, column2, ...
FROM table
ORDER BY column ASC [DESC], column2 ASC [DESC],...;

# Group rows using GROUP BY clause.
SELECT *
FROM table
GROUP BY column_1, column_2, ...;

# Filter groups using the HAVING clause.
SELECT *
FROM table
GROUP BY column_1
HAVING condition;

# Combine the result set of two or more queries with UNION operator:
SELECT * FROM table1
UNION
SELECT * FROM table2;

# Minus a result set using EXCEPT operator:
SELECT * FROM table1
EXCEPT
SELECT * FROM table2;

# Get intersection of the result sets of two queries:
SELECT * FROM table1
INTERSECT
SELECT * FROM table2;