What is the average annual salary for Field Superintendent-Construction? The annual salary for someone with the job title Field Superintendent-Construction may vary depending on a number of factors including industry, company size, location, years of experience and level of education.he annual salary for someone with the job title Field Superintendent-Construction may vary depending on a number of factors including industry, company size, location, years of experience and level of education.
VARCHAR : when u r using this data type what ever size u r giving that much of memory is allocated to that variable. suppose u r giving varcahr(20) then u enter only 15 cahracters of that variable then also it is giving memory of 20 cahracters.VARCHAR2: when u r using this data type the memory allocation is different.
1 varchar(n) variables store non-fixed length character strings consisting of approximately n characters. 2  They consume l+2 bytes of space, where l is the actual length of the string. 3  They are limited to 8,000 characters in size. They are limited to 8,000 characters in size. 2  nvarchar(n) variables store non-fixed length Unicode character strings consisting of approximately n characters. 3  They consume 2*l+2 bytes of space, where l is the actual length of the string. 4  They are limited to 4,000 characters in size.