PostgreSQL 10 Documentation: VAR

VAR
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VAR

VAR — define a variable

VAR varname IS ctype

The VAR command assigns a new C data type to a host variable. The host variable must be previously declared in a declare section.

Exec sql begin declare section;
short a;
exec sql end declare section;
EXEC SQL VAR a IS int;

The VAR command is a PostgreSQL extension.