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Diffstat (limited to 'src/include/postgres.h')
| -rw-r--r-- | src/include/postgres.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/include/postgres.h b/src/include/postgres.h index 7d93fbce709..8b92f453e7a 100644 --- a/src/include/postgres.h +++ b/src/include/postgres.h @@ -544,6 +544,20 @@ Float8GetDatum(float8 X) */ /* + * pg_ternary + * Boolean value with an extra "unset" value + * + * This enum can be used for values that want to distinguish between true, + * false, and unset. +*/ +typedef enum pg_ternary +{ + PG_TERNARY_FALSE = 0, + PG_TERNARY_TRUE = 1, + PG_TERNARY_UNSET = -1 +} pg_ternary; + +/* * NON_EXEC_STATIC: It's sometimes useful to define a variable or function * that is normally static but extern when using EXEC_BACKEND (see * pg_config_manual.h). There would then typically be some code in |