我正在尝试为 SQL Server 2008 重写这个 Oracle 查询:
UPDATE "LOAD"."UNITS_OF_MEASURE"
SET ("UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE", "UOM_REFERENCE", "UOM_SUBTYPE_ID") =
( SELECT "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE", 0 AS "UOM_REFERENCE", NULL AS "UOM_SUBTYPE_ID"
FROM ( SELECT DISTINCT "UOM_TYPE_ID", "UOM_CODE", "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE"
FROM "LOAD"."LOADER_UNITS_OF_MEASURE"
INNER JOIN "LOAD"."UOM_TYPES" ON ("UOM_TYPES"."UOM_TYPE_CODE"="LOADER_UNITS_OF_MEASURE"."UOM_TYPE_CODE")
) SELECTION
WHERE ("SELECTION"."UOM_TYPE_ID"="UNITS_OF_MEASURE"."UOM_TYPE_ID")
AND ("SELECTION"."UOM_CODE"="UNITS_OF_MEASURE"."UOM_CODE")
)
WHERE EXISTS ( SELECT "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE", 0 AS "UOM_REFERENCE", NULL AS "UOM_SUBTYPE_ID"
FROM ( SELECT DISTINCT "UOM_TYPE_ID", "UOM_CODE", "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE"
FROM "LOAD"."LOADER_UNITS_OF_MEASURE"
INNER JOIN "LOAD"."UOM_TYPES" ON ("UOM_TYPES"."UOM_TYPE_CODE"="LOADER_UNITS_OF_MEASURE"."UOM_TYPE_CODE")
) SELECTION
WHERE ("SELECTION"."UOM_TYPE_ID"="UNITS_OF_MEASURE"."UOM_TYPE_ID")
AND ("SELECTION"."UOM_CODE"="UNITS_OF_MEASURE"."UOM_CODE")
)
内部SELECT
查询应该保持不变,因为查询是由独立于 DBMS 的查询构建器层自动组成的。
除其他外,我尝试了以下语法:
UPDATE "LOAD"."UNITS_OF_MEASURE"
SET "UOM_DESC" = i."UOM_DESC", "UOM_SYMBOL" = i."UOM_SYMBOL", "UOM_MUL_FACTOR" = i."UOM_MUL_FACTOR", "UOM_ADD_FACTOR" = i."UOM_ADD_FACTOR", "UOM_DEC_PLACE" = i."UOM_DEC_PLACE",
"UOM_REFERENCE" = 0, "UOM_SUBTYPE_ID" = NULL FROM
( SELECT "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE", 0 AS "UOM_REFERENCE", NULL AS "UOM_SUBTYPE_ID"
FROM ( SELECT DISTINCT "UOM_TYPE_ID", "UOM_CODE", "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE"
FROM "LOAD"."LOADER_UNITS_OF_MEASURE"
INNER JOIN "LOAD"."UOM_TYPES" ON ("UOM_TYPES"."UOM_TYPE_CODE"="LOADER_UNITS_OF_MEASURE"."UOM_TYPE_CODE")
) SELECTION
WHERE ("SELECTION"."UOM_TYPE_ID"="UNITS_OF_MEASURE"."UOM_TYPE_ID")
AND ("SELECTION"."UOM_CODE"="UNITS_OF_MEASURE"."UOM_CODE")
)i
WHERE EXISTS ( SELECT "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE", 0 AS "UOM_REFERENCE", NULL AS "UOM_SUBTYPE_ID"
FROM ( SELECT DISTINCT "UOM_TYPE_ID", "UOM_CODE", "UOM_DESC", "UOM_SYMBOL", "UOM_MUL_FACTOR", "UOM_ADD_FACTOR", "UOM_DEC_PLACE"
FROM "LOAD"."LOADER_UNITS_OF_MEASURE"
INNER JOIN "LOAD"."UOM_TYPES" ON ("UOM_TYPES"."UOM_TYPE_CODE"="LOADER_UNITS_OF_MEASURE"."UOM_TYPE_CODE")
) SELECTION
WHERE ("SELECTION"."UOM_TYPE_ID"="UNITS_OF_MEASURE"."UOM_TYPE_ID")
AND ("SELECTION"."UOM_CODE"="UNITS_OF_MEASURE"."UOM_CODE")
)
但不幸的是"UNITS_OF_MEASURE"."UOM_TYPE_ID"
,"UNITS_OF_MEASURE"."UOM_CODE"
第 9-10 行无法解决。