15.03.2022 21:43, Adriano dos Santos Fernandes wrote:
In fact, what you priorly define as LT is IMO "declared" LTT.
I had that impression before read the standard, but then I changed my
opinion.
"Part 4: Persistent Stored Modules (SQL/PSM)" is about PSQL, AFAIU.
It includes: "12.8 <temporary table declaration>" that refers to "Part
2: Foundation (SQL/Foundation)" which defines:
<temporary table declaration> ::=
DECLARE LOCAL TEMPORARY TABLE <table name> <table element list>
[ ON COMMIT <table commit action> ROWS ]
Given that Part 4 also defines DECLARE CURSOR which is also redirected
to "Part 2: Foundation (SQL/Foundation)" I understand it as declared
LTTs are allowed in PSQL.
I also did not found any major DBMS that implemented declared LTTs, nor
SQL-standard modules.
Sybase ASA, as you already mentioned, although maybe not so "major".
From their docs: "Declared local temporary tables within compound
statements exist within the compound statement."
Dmitry
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