Postgresql user defined function giving different result compared to running the query directly

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I have created the following function:

create function test() returns varchar as 'select * from temp;' language sql;

When I run these 2 different queries I expect to get the same result however the first query only gives me the first row of the table while the second query gives the entire table:

select * from test(); // only gives the first row

select * from temp; // gives the whole table

Why is this? How can I make the function so that it gives the whole table? Thanks

I got it to work, I need to add the work setof like so:

create function test() returns setof varchar as 'select * from temp;' language sql;

Thanks a lot to @SamiKuhmonen

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

6

returns varchar doesn't allow returning more than one result. You probably want to use setof and a type of row
– Sami Kuhmonen
Nov 14 at 22:40

add a comment |

up vote
0
down vote

favorite

I have created the following function:

create function test() returns varchar as 'select * from temp;' language sql;

When I run these 2 different queries I expect to get the same result however the first query only gives me the first row of the table while the second query gives the entire table:

select * from test(); // only gives the first row

select * from temp; // gives the whole table

Why is this? How can I make the function so that it gives the whole table? Thanks

I got it to work, I need to add the work setof like so:

create function test() returns setof varchar as 'select * from temp;' language sql;

Thanks a lot to @SamiKuhmonen

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

6

returns varchar doesn't allow returning more than one result. You probably want to use setof and a type of row
– Sami Kuhmonen
Nov 14 at 22:40

add a comment |

up vote
0
down vote

favorite

I have created the following function:

create function test() returns varchar as 'select * from temp;' language sql;

When I run these 2 different queries I expect to get the same result however the first query only gives me the first row of the table while the second query gives the entire table:

select * from test(); // only gives the first row

select * from temp; // gives the whole table

Why is this? How can I make the function so that it gives the whole table? Thanks

I got it to work, I need to add the work setof like so:

create function test() returns setof varchar as 'select * from temp;' language sql;

Thanks a lot to @SamiKuhmonen

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

I have created the following function:

create function test() returns varchar as 'select * from temp;' language sql;

When I run these 2 different queries I expect to get the same result however the first query only gives me the first row of the table while the second query gives the entire table:

select * from test(); // only gives the first row

select * from temp; // gives the whole table

Why is this? How can I make the function so that it gives the whole table? Thanks

I got it to work, I need to add the work setof like so:

create function test() returns setof varchar as 'select * from temp;' language sql;

Thanks a lot to @SamiKuhmonen

postgresql

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

edited Nov 15 at 20:26

Mahesh H Viraktamath

3961421

asked Nov 14 at 22:32

fred

476316

asked Nov 14 at 22:32

fred

476316

asked Nov 14 at 22:32

fred

476316

6

returns varchar doesn't allow returning more than one result. You probably want to use setof and a type of row
– Sami Kuhmonen
Nov 14 at 22:40

add a comment |

6

returns varchar doesn't allow returning more than one result. You probably want to use setof and a type of row
– Sami Kuhmonen
Nov 14 at 22:40

returns varchar doesn't allow returning more than one result. You probably want to use setof and a type of row
– Sami Kuhmonen
Nov 14 at 22:40

add a comment |

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