# Headers

- [HEADERASSTRING](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headerasstring.md): This page describes the HEADERASSTRING function in Lenses SQL.
- [HEADERASINT](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headerasint.md): This page describes the HEADERASINT function in Lenses SQL.
- [HEADERASLONG](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headeraslong.md): This page describes the HEADERASLONG function in Lenses SQL.
- [HEADERASDOUBLE](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headerasdouble.md): This page describes the HEADERASDOUBLE function in Lenses SQL.
- [HEADERASFLOAT](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headerasfloat.md): This page describes the HEADERASFLOAT function in Lenses SQL.
- [HEADERKEYS](/latest/devx/6.0/user-guide/sql-reference/functions/headers/headerkeys.md): This page describes the HEADERKEYS function in Lenses SQL.