The minimum limit of size character using character varying data type in PostgreSQL is 1.It is allowed so using this size table is created. In the second example we have define the size of the character varying data type as 10485760.It will display the error as “ERROR: length for type varchar cannot exceed 10485760”.
In the above first example, we have to define the size of character varying data type as 10485761 but this value is not allowed in PostgreSQL because the max size of character varying data type is 10485760.
POSTGRES COLLATE SERIAL
Alter –This command is used to alter the column to change the data type as character varying.We can define data type at the time of table creation and we can also define after table creation using the alter command. Column name – This is defined as the name of the column on which we have defined data type as character varying.Table name –We can define character varying data type to the column name at the time of table creation.Table name is important when we have defining character varying data type to the column.We can pass a number of character which was allowed in the column field. Character varying is work the same as a varchar data type in PostgreSQL. Character varying – This specifies that we have using column data type as character varying.Alter table table_name (Name of table name which column we have altering) alter column column_name (Name of column which we have altering) type character varying (n) īelow is the parameter description syntax of character varying in PostgreSQL.Create table table_name (column_name character varying (n)).Hadoop, Data Science, Statistics & othersīelow is the syntax of character varying in PostgreSQL.