Often in PostgreSQL you may want to get the last day of the week. You can use the following basic syntax to do so: SELECT…

Often in PostgreSQL you may want to create a timestamp that represents the end of the day for a particular date. You can use the…

Often in PostgreSQL you may want to create a new column in a table whose values are based on the values from another column. You…

Often in PostgreSQL you may want to cast a key in a JSONB column to an integer. You can use the following syntax to do…

Often in PostgreSQL you may want to concatenate strings inside of a WHERE clause. You can use the following syntax to do so: SELECT *…

Often in PostgreSQL you may want to calculate a weighted average using two columns in a table. You can use the following basic syntax to…

Often in PostgreSQL you may want to order the rows of a table based on a column that contains month names. You can use the…

Often in PostgreSQL you may want to get the week number from a date. You can use the following syntax to do so: SELECT *,…

Often in PostgreSQL you may want to specify a custom order for the resulting rows of a UNION between two tables. You can use the…

Often in PostgreSQL you may want to remove duplicate rows from a table based on duplicate values in two columns. You can use the following…

Often in PostgreSQL you may want to count the number of business days between two dates. You can create the following function named business_days() to…