Control reaches end of function without return ERROR: control reaches end of function without return The cause of this error is the lack of execution of the command return in the function. Wrong function CREATE OR REPLACE FUNCTION update_customers( p_first_name varchar,...
PostgreSQL duplicate key value violates unique constraint Duplicate key value violates unique constraint in PL/pgSQL Duplicate key The cause of error: Duplicate key value violates unique constraint in PL/pgSQL. The solution is to add unique values when you make insert or...
Duplicate key value violates unique constraint Customers table Id First_name Last_name 1 Tom Green 2 Jacob Logan 3 John Pope insert into customers (first_name, last_name) values ('John', 'Pope'); ERROR: duplicate key value violates unique constraint This error occurs when because on...
PostgreSQL INSERT has more target columns than expressions INSERT has more target columns than expressions in PL/pgSQL INSERT has more target columns The cause of error: INSERT has more target columns than expressions in PL/pgSQL. The solution is to check the...
PostgreSQL invalid input syntax for type boolean The cause of error: Invalid input syntax for type boolean is when values other than true or false are assigned to an boolean variable. Wrong function CREATE OR REPLACE FUNCTION update_test2 (p_old_name varchar, p_new_name...