WITH hide AS
(
UPDATE "TABLE1"
SET
"Value1" = FALSE
WHERE "кое-что" = ANY ($1 :: INT [])
)
UPDATE "TABLE1"
SET
"Value2" = TRUE
WHERE "кое-что" = ANY ($1 :: INT [])
AND NOT EXISTS(
SELECT NULL
FROM "TABLE2"
WHERE "что-то" = "кое-что"
)
AND NOT EXISTS(
SELECT NULL
FROM "TABLE3"
WHERE "что-то" = "кое-что"
)
The sub-statements in WITH are executed concurrently with each other and with the main query. Therefore, when using data-modifying statements in WITH, the order in which the specified updates actually happen is unpredictable. All the statements are executed with the same snapshot (see Chapter 13), so they cannot "see" one another's effects on the target tables.
UPDATE "TABLE1"
SET
"Value2" = (NOT EXISTS(
SELECT NULL
FROM "TABLE2"
WHERE "что-то" = "кое-что"
)
AND NOT EXISTS(
SELECT NULL
FROM "TABLE3"
WHERE "что-то" = "кое-что"
))
WHERE "кое-что" = ANY ($1 :: INT [])
Простой
Средний
Простой
Средний
