function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also 125 function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also 125 function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

.................................................................................118 8.7.3. Type Safety ................................................................................................119 Issues with the 7.1.1b Feature Supplement .........................356 15.8.6.7. --enable-thread-safety and UnixWare .............................356 15.8.7. Solaris ................................. WHERE current_mood = (SELECT MIN(current_mood) FROM person); name ------- Larry (1 row) 8.7.3. Type Safety Each enumerated data type is separate and cannot be compared with other enumerated types. Example

.................................................................................125 8.7.3. Type Safety ................................................................................................ with the 7.1.1b Feature Supplement ................................377 15.8.6.7. --enable-thread-safety and UnixWare ....................................378 15.8.7. Solaris .......................... MIN(current_mood) FROM person); name ------- Larry (1 row) 125 Chapter 8. Data Types 8.7.3. Type Safety Each enumerated data type is separate and cannot be compared with other enumerated types. Example

function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also support function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also support function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also support function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

Chapter 8. Data Types Name Description trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all present the procedural languages all forbid use of a pseudo-type as argument type, and allow only void and record as a result type (plus trigger when the function is used as a trigger). Some also support function has at least one internal-type argument then it cannot be called from SQL. To preserve the type safety of this restriction it is important to follow this coding rule: do not create any function that is

.................................................................................111 8.7.3. Type Safety ................................................................................................ WHERE current_mood = (SELECT MIN(current_mood) FROM person); name ------- Larry (1 row) 8.7.3. Type Safety Enumerated types are completely separate data types and may not be compared with each other. Example function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all

.................................................................................105 8.7.3. Type Safety ................................................................................................106 WHERE current_mood = (SELECT MIN(current_mood) FROM person); name ------- Larry (1 row) 8.7.3. Type Safety Enumerated types are completely separate data types and may not be compared with each other. Example function returning an unspecified row type. trigger A trigger function is declared to return trigger. void Indicates that a function returns no value. opaque An obsolete type name that formerly served all