【发布时间】：2016-04-21 20:28:41
【问题描述】：
我碰巧有一个非常有趣的查询和问题。我们正在运行 Oracle 12c（大约一年前从 11g 迁移），最近才从 jOOq 3.4.x 迁移到 3.7.3，我不想使用现在已弃用的 DSL.fieldByName，但我很难找到DSL.field 选项中真正类似的替代品。这是在 3.4.x 中生成的查询（为安全起见，模式名和表名被隐藏）：
select
"v0" "pTitle",
"v1" "pCode",
"v2" "description",
"v3" "coid",
"v4" "viewCount",
"v5" "fileId",
"v6" "displayPos"
from (
select
"x"."v0",
"x"."v1",
"x"."v2",
"x"."v3",
"x"."v4",
"x"."v5",
"x"."v6",
rownum "rn"
from (
select
"pTitle" "v0",
"pCode" "v1",
"description" "v2",
"coid" "v3",
"viewCount" "v4",
"fileId" "v5",
rownum "v6"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE" "pTitle",
"LibraryType"."CODE" "pCode",
"SCHEMA_A"."LIBRARY"."DESCRIPTION" "description",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" "coid",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" "viewCount",
"SCHEMA_A"."FILES"."FILE_ID" "fileId",
row_number() over (partition by "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" order by "SCHEMA_A"."FILES"."FILE_ID" desc nulls last) "maxFileId"
from "SCHEMA_A"."AC_ASSOC_TABLE"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'OBJECT_TYPE'
)
)
on (
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'PORTFOLIOS'
)
join "SCHEMA_A"."AC_RELEASE_TYPE"
on (
"SCHEMA_A"."AC_RELEASE_TYPE"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_RELEASE_TYPE"."SECTION" = 1
and "SCHEMA_A"."AC_RELEASE_TYPE"."RELEASE_TYPE" in (
6, 7
)
)
join "SCHEMA_A"."AC_SENSITIVITIES"
on (
"SCHEMA_A"."AC_SENSITIVITIES"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_SENSITIVITIES"."SECTION" = 0
)
join "SCHEMA_A"."USERS"
on (
bitand(
"SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES",
"SCHEMA_A"."USERS"."SENSITIVITIES") = "SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES"
and "SCHEMA_A"."USERS"."USER_ID" = 456920
)
join (
"SCHEMA_A"."LIBRARY"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'STATUS'
)
)
on (
"SCHEMA_A"."LIBRARY"."LIBRARY_STATUS_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'ACTIVE'
)
join (
"SCHEMA_A"."LKU_CODE" "LibraryType"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"LibraryType"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'PORTFOLIO_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."PORTFOLIO_TYPE_ID" = "LibraryType"."LKU_CODE_ID"
and "LibraryType"."CODE" in (
'ELEMENT', 'PROJECT', 'PROGRAM'
)
)
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'ACTIVITY_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."ACTIVITY_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" in (
'MISSION_WITH_TECHNOLOGY', 'TECHNOLOGY_ONLY'
)
)
)
on "SCHEMA_A"."LIBRARY"."LIBRARY_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
left outer join (
"SCHEMA_A"."LIBRARY_ITEMS"
join "SCHEMA_A"."FILES"
on "SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_ID" = "SCHEMA_A"."FILES"."PARENT_OBJECT_ID"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'LIBRARY_ITEM_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'OBJECT_IMAGE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
and "SCHEMA_A"."LIBRARY_ITEMS"."IS_PRIMARY" = 1
)
where "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" is not null
order by "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" desc
) "alias_101861728"
where "maxFileId" = 1
) "x"
where rownum <= (0 + 10)
)
where "rn" > 0
order by "rn"
以下是我可以使用DSL.field(Name,Class<T>) 从 3.7.x 中获得的内容：
select
"v0" "pTitle",
"v1" "pCode",
"v2" "description",
"v3" "coid",
"v4" "viewCount",
"v5" "fileId",
"v6" "displayPos"
from (
select
"x"."v0",
"x"."v1",
"x"."v2",
"x"."v3",
"x"."v4",
"x"."v5",
"x"."v6",
rownum "rn"
from (
select
pTitle "v0",
pCode "v1",
description "v2",
coid "v3",
viewCount "v4",
fileId "v5",
rownum "v6"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE" "pTitle",
"LibraryType"."CODE" "pCode",
"SCHEMA_A"."LIBRARY"."DESCRIPTION" "description",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" "coid",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" "viewCount",
"SCHEMA_A"."FILES"."FILE_ID" "fileId",
row_number() over (partition by "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" order by "SCHEMA_A"."FILES"."FILE_ID" desc nulls last) "maxFileId"
from "SCHEMA_A"."AC_ASSOC_TABLE"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'OBJECT_TYPE'
)
)
on (
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'PORTFOLIOS'
)
join "SCHEMA_A"."AC_RELEASE_TYPE"
on (
"SCHEMA_A"."AC_RELEASE_TYPE"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_RELEASE_TYPE"."SECTION" = 1
and "SCHEMA_A"."AC_RELEASE_TYPE"."RELEASE_TYPE" in (
6, 7
)
)
join "SCHEMA_A"."AC_SENSITIVITIES"
on (
"SCHEMA_A"."AC_SENSITIVITIES"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_SENSITIVITIES"."SECTION" = 0
)
join "SCHEMA_A"."USERS"
on (
bitand(
"SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES",
"SCHEMA_A"."USERS"."SENSITIVITIES") = "SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES"
and "SCHEMA_A"."USERS"."USER_ID" = 456920
)
join (
"SCHEMA_A"."LIBRARY"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'STATUS'
)
)
on (
"SCHEMA_A"."LIBRARY"."LIBRARY_STATUS_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'ACTIVE'
)
join (
"SCHEMA_A"."LKU_CODE" "LibraryType"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"LibraryType"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'PORTFOLIO_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."PORTFOLIO_TYPE_ID" = "LibraryType"."LKU_CODE_ID"
and "LibraryType"."CODE" in (
'ELEMENT', 'PROJECT', 'PROGRAM'
)
)
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'ACTIVITY_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."ACTIVITY_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" in (
'MISSION_WITH_TECHNOLOGY', 'TECHNOLOGY_ONLY'
)
)
)
on "SCHEMA_A"."LIBRARY"."LIBRARY_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
left outer join (
"SCHEMA_A"."LIBRARY_ITEMS"
join "SCHEMA_A"."FILES"
on "SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_ID" = "SCHEMA_A"."FILES"."PARENT_OBJECT_ID"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'LIBRARY_ITEM_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'OBJECT_IMAGE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
and "SCHEMA_A"."LIBRARY_ITEMS"."IS_PRIMARY" = 1
)
where "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" is not null
order by "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" desc
) "alias_101861728"
where "maxFileId" = 1
) "x"
where rownum <= (0 + 10)
)
where "rn" > 0
order by "rn"
上面的重要一点是我们丢失了别名周围的引号。现在，Java 代码本身必须很有趣。似乎 jOOq（在 3.4.x 和 3.7.x 中）在为 Oracle 进行（精彩的）限制和偏移模拟时“忘记”使用别名，所以我不得不做一些诡计（3.4.x） ：
final LkuCode libraryType = LkuCode.LKU_CODE.as("LibraryType");
final Field<Integer> maxFileId = DSL.rowNumber()
.over(DSL.partitionBy(co.OBJECT_ID).orderBy(f.FILE_ID.desc().nullsLast()))
.as("maxFileId");
final Field<String> pTitle = p.TITLE.as("pTitle");
final Field<String> pCode = libraryType.CODE.as("pCode");
final Field<String> description = p.DESCRIPTION.as("description");
final Field<BigDecimal> coid = co.OBJECT_ID.as("coid");
final Field<BigDecimal> viewCount = co.VIEW_COUNT.as("viewCount");
final Field<BigDecimal> fileId = f.FILE_ID.as("fileId");
final Field<String> pTitleAliasField = DSL.fieldByName(pTitle.getDataType(), pTitle.getName());
final Field<String> pCodeAliasField = DSL.fieldByName(pCode.getDataType(), pCode.getName());
final Field<String> descriptionAliasField = DSL.fieldByName(description.getDataType(), description.getName());
final Field<BigDecimal> coidAliasField = DSL.fieldByName(coid.getDataType(), coid.getName());
final Field<BigDecimal> viewCountAliasField = DSL.fieldByName(viewCount.getDataType(), viewCount.getName());
final Field<BigDecimal> fileIdAliasField = DSL.fieldByName(fileId.getDataType(), fileId.getName());
final Field<Integer> displayPos = (DSL.rownum().as("displayPos"));
final BigDecimal[] rts = new BigDecimal[] {RELEASE_TYPE_PUBLIC,
RELEASE_TYPE_INTERNAL};
final Condition limitByRelease = (cort.SECTION.equal(BigDecimal
.valueOf(AccessControlConstants.CORE_OBJECT_CHAR_ARRAY_PUBLIC_DATA)).and(cort.RELEASE_TYPE
.in(rts)));
final BigDecimal uid = new BigDecimal(DatabaseManager.getUid());
final Result<Record7<String, String, String, BigDecimal, BigDecimal, BigDecimal, Integer>> result;
try (Connection readConn = DatabaseManager.getConnection(false);
final DSLContext readContext = DatabaseManager.getBuilder(readConn)) {
final Select<Record7<String, String, String, BigDecimal, BigDecimal, BigDecimal, Integer>> query = readContext
.select(pTitleAliasField, pCodeAliasField, descriptionAliasField, coidAliasField,
viewCountAliasField, fileIdAliasField, displayPos)
.from(readContext
.select(pTitle, pCode, description, coid, viewCount, fileId, maxFileId)
.from(co
.join(lc.join(lct).onKey(Keys.LC_LCT___FK)
.and(lct.CODE_TYPE.equal(LkuCodeTypeLookup.OBJECT_TYPE)))
.onKey(Keys.CO_LC_OTI___FK)
.and(lc.CODE.equal(LkuCodeLookup.OBJECTTYPE_PORTFOLIOS))
.join(cort)
.onKey(Keys.CORT_CO___FK)
.and(limitByRelease)
.join(cos)
.onKey(Keys.COS_CO___FK)
.and(cos.SECTION.equal(BigDecimal
.valueOf(AccessControlConstants.CORE_OBJECT_CHAR_ARRAY_SELF)))
.join(tu)
.on(DSL.bitAnd(cos.SENSITIVITIES, tu.SENSITIVITIES)
.equal(cos.SENSITIVITIES).and(tu.USER_ID.equal(uid))))
.join(p
.join(lc.join(lct).onKey(Keys.LC_LCT___FK)
.and(lct.CODE_TYPE.equal(LkuCodeTypeLookup.PORTFOLIO_STATUS)))
.onKey(Keys.P_LC_PSI___FK)
.and(lc.CODE.equal(LkuCodeLookup.PORTFOLIO_STATUS_ACTIVE))
.join(libraryType.join(lct)
.on(libraryType.LKU_CODE_TYPE_ID.equal(lct.LKU_CODE_TYPE_ID))
.and(lct.CODE_TYPE.equal(LkuCodeTypeLookup.PORTFOLIO_TYPE)))
.on(p.PORTFOLIO_TYPE_ID.equal(libraryType.LKU_CODE_ID))
.and(libraryType.CODE
.in(new String[] {LkuCodeLookup.PORTFOLIO_TYPE_ELEMENT,
LkuCodeLookup.PORTFOLIO_TYPE_PROJECT,
LkuCodeLookup.PORTFOLIO_TYPE_PROGRAM}))
.join(lc.join(lct).onKey(Keys.LC_LCT___FK)
.and(lct.CODE_TYPE.equal(LkuCodeTypeLookup.ACTIVITY_TYPE)))
.onKey(Keys.P_LC_ATI___FK)
.and(lc.CODE.in(LkuCodeLookup.PORTFOLIO_ACTIVITY_TYPE_TECHNOLOGY)))
.on(p.PORTFOLIO_ID.equal(co.OBJECT_ID))
.leftOuterJoin(
li
.join(f)
.on(li.LIBRARY_ITEM_ID.equal(f.PARENT_OBJECT_ID))
.join(lc
.join(lct)
.onKey(Keys.LC_LCT___FK)
.and(lct.CODE_TYPE
.equal(LkuCodeTypeLookup.LIBRARY_ITEM_TYPE)))
.onKey(Keys.LI_LC_LITI___FK)
.and(lc.CODE.equal(LkuCodeLookup.LIBRARY_ITEM_TYPE_OBJECT_IMAGE)))
.on(li.PORTFOLIO_ID.equal(co.OBJECT_ID).and(
li.IS_PRIMARY.equal(byteOne)))
.where(co.VIEW_COUNT.isNotNull()).orderBy(co.VIEW_COUNT.desc()))
.where(maxFileId.equal(Integer.valueOf(1))).limit(numberOfObjects).offset(startNumber - 1);
result = query.fetch();
现在，我明白我可以使用 SQL EXISTS 而不是加入 SENSITVITIES 和 RELEASE_TYPES 表（以及其他几个表），但这就是我现在正在做的事情，这并不相关对这个问题。如果还有什么我能做的，我很想听听。我试过根本不使用任何别名，但事情就搞砸了：
final Select<Record7<String, String, String, BigDecimal, BigDecimal, BigDecimal, Integer>> query = readContext
.select(HomeDAO.p.PORTFOLIO_TITLE, portfolioType.CODE, HomeDAO.p.BRIEF_DESCRIPTION,
HomeDAO.co.OBJECT_ID, HomeDAO.co.VIEW_COUNT, HomeDAO.f.FILE_ID, displayPos)
.from(readContext
.select(HomeDAO.p.PORTFOLIO_TITLE, portfolioType.CODE, HomeDAO.p.BRIEF_DESCRIPTION,
HomeDAO.co.OBJECT_ID, HomeDAO.co.VIEW_COUNT, HomeDAO.f.FILE_ID, maxFileId)
.from(HomeDAO.co
.join(HomeDAO.lc.join(HomeDAO.lct).onKey(Keys.LC_LCT___FK)
.and(HomeDAO.lct.CODE_TYPE.equal(LkuCodeTypeLookup.OBJECT_TYPE)))
.onKey(Keys.CO_LC_OTI___FK)
.and(HomeDAO.lc.CODE.equal(LkuCodeLookup.OBJECTTYPE_PORTFOLIOS))
.join(HomeDAO.cort)
.onKey(Keys.CORT_CO___FK)
.and(limitByRelease)
.join(HomeDAO.cos)
.onKey(Keys.COS_CO___FK)
.and(HomeDAO.cos.SECTION.equal(BigDecimal
.valueOf(AccessControlConstants.CORE_OBJECT_CHAR_ARRAY_SELF)))
.join(HomeDAO.tu)
.on(DSL.bitAnd(HomeDAO.cos.SENSITIVITIES, HomeDAO.tu.SENSITIVITIES)
.equal(HomeDAO.cos.SENSITIVITIES).and(HomeDAO.tu.USER_ID.equal(uid))))
.join(HomeDAO.p
.join(HomeDAO.lc.join(HomeDAO.lct).onKey(Keys.LC_LCT___FK)
.and(HomeDAO.lct.CODE_TYPE.equal(LkuCodeTypeLookup.PORTFOLIO_STATUS)))
.onKey(Keys.P_LC_PSI___FK)
.and(HomeDAO.lc.CODE.equal(LkuCodeLookup.PORTFOLIO_STATUS_ACTIVE))
.join(portfolioType.join(HomeDAO.lct)
.on(portfolioType.LKU_CODE_TYPE_ID.equal(HomeDAO.lct.LKU_CODE_TYPE_ID))
.and(HomeDAO.lct.CODE_TYPE.equal(LkuCodeTypeLookup.PORTFOLIO_TYPE)))
.on(HomeDAO.p.PORTFOLIO_TYPE_ID.equal(portfolioType.LKU_CODE_ID))
.and(portfolioType.CODE
.in(new String[] {LkuCodeLookup.PORTFOLIO_TYPE_ELEMENT,
LkuCodeLookup.PORTFOLIO_TYPE_PROJECT,
LkuCodeLookup.PORTFOLIO_TYPE_PROGRAM}))
.join(HomeDAO.lc.join(HomeDAO.lct).onKey(Keys.LC_LCT___FK)
.and(HomeDAO.lct.CODE_TYPE.equal(LkuCodeTypeLookup.ACTIVITY_TYPE)))
.onKey(Keys.P_LC_ATI___FK)
.and(HomeDAO.lc.CODE.in(LkuCodeLookup.PORTFOLIO_ACTIVITY_TYPE_TECHNOLOGY)))
.on(HomeDAO.p.PORTFOLIO_ID.equal(HomeDAO.co.OBJECT_ID))
.leftOuterJoin(
HomeDAO.li
.join(HomeDAO.f)
.on(HomeDAO.li.LIBRARY_ITEM_ID.equal(HomeDAO.f.PARENT_OBJECT_ID))
.join(HomeDAO.lc
.join(HomeDAO.lct)
.onKey(Keys.LC_LCT___FK)
.and(HomeDAO.lct.CODE_TYPE
.equal(LkuCodeTypeLookup.LIBRARY_ITEM_TYPE)))
.onKey(Keys.LI_LC_LITI___FK)
.and(HomeDAO.lc.CODE.equal(LkuCodeLookup.LIBRARY_ITEM_TYPE_OBJECT_IMAGE)))
.on(HomeDAO.li.PORTFOLIO_ID.equal(HomeDAO.co.OBJECT_ID).and(
HomeDAO.li.IS_PRIMARY.equal(HomeDAO.byteOne)))
.where(HomeDAO.co.VIEW_COUNT.isNotNull()).orderBy(HomeDAO.co.VIEW_COUNT.desc()))
.where(maxFileId.equal(Integer.valueOf(1))).limit(numberOfObjects).offset(startNumber - 1);
产量：
select
"v0" "TITLE",
"v1" "CODE",
"v2" "DESCRIPTION",
"v3" "OBJECT_ID",
"v4" "VIEW_COUNT",
"v5" "FILE_ID",
"v6" "displayPos"
from (
select
"x"."v0",
"x"."v1",
"x"."v2",
"x"."v3",
"x"."v4",
"x"."v5",
"x"."v6",
rownum "rn"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE" "v0",
"PortfolioType"."CODE" "v1",
"SCHEMA_A"."LIBRARY"."DESCRIPTION" "v2",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" "v3",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" "v4",
"SCHEMA_A"."FILES"."FILE_ID" "v5",
row_number "v6"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE",
"PortfolioType"."CODE",
"SCHEMA_A"."LIBRARY"."DESCRIPTION",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT",
"SCHEMA_A"."FILES"."FILE_ID",
row_number() over (partition by "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" order by "SCHEMA_A"."FILES"."FILE_ID" desc nulls last) "maxFileId"
from "SCHEMA_A"."AC_ASSOC_TABLE"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'OBJECT_TYPE'
)
)
on (
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'PORTFOLIOS'
)
join "SCHEMA_A"."AC_RELEASE_TYPE"
on (
"SCHEMA_A"."AC_RELEASE_TYPE"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_RELEASE_TYPE"."SECTION" = 1
and "SCHEMA_A"."AC_RELEASE_TYPE"."RELEASE_TYPE" in (
6, 7
)
)
join "SCHEMA_A"."AC_SENSITIVITIES"
on (
"SCHEMA_A"."AC_SENSITIVITIES"."AC_OBJECT_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."AC_OBJECT_ID"
and "SCHEMA_A"."AC_SENSITIVITIES"."SECTION" = 0
)
join "SCHEMA_A"."USERS"
on (
bitand(
"SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES",
"SCHEMA_A"."USERS"."SENSITIVITIES") = "SCHEMA_A"."AC_SENSITIVITIES"."SENSITIVITIES"
and "SCHEMA_A"."USERS"."USER_ID" = 456920
)
join (
"SCHEMA_A"."LIBRARY"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'STATUS'
)
)
on (
"SCHEMA_A"."LIBRARY"."PORTFOLIO_STATUS_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'ACTIVE'
)
join (
"SCHEMA_A"."LKU_CODE" "PortfolioType"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"PortfolioType"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'PORTFOLIO_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."LIBRARY_ITEM_ID" = "PortfolioType"."LKU_CODE_ID"
and "PortfolioType"."CODE" in (
'ELEMENT', 'PROJECT', 'PROGRAM'
)
)
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'ACTIVITY_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY"."ACTIVITY_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" in (
'MISSION_WITH_TECHNOLOGY', 'TECHNOLOGY_ONLY'
)
)
)
on "SCHEMA_A"."LIBRARY"."LIBRARY_ITEM_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
left outer join (
"SCHEMA_A"."LIBRARY_ITEMS"
join "SCHEMA_A"."FILES"
on "SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_ID" = "SCHEMA_A"."FILES"."PARENT_OBJECT_ID"
join (
"SCHEMA_A"."LKU_CODE"
join "SCHEMA_A"."LKU_CODE_TYPE"
on (
"SCHEMA_A"."LKU_CODE"."LKU_CODE_TYPE_ID" = "SCHEMA_A"."LKU_CODE_TYPE"."LKU_CODE_TYPE_ID"
and "SCHEMA_A"."LKU_CODE_TYPE"."CODE_TYPE" = 'LIBRARY_ITEM_TYPE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_TYPE_ID" = "SCHEMA_A"."LKU_CODE"."LKU_CODE_ID"
and "SCHEMA_A"."LKU_CODE"."CODE" = 'OBJECT_IMAGE'
)
)
on (
"SCHEMA_A"."LIBRARY_ITEMS"."LIBRARY_ITEM_ID" = "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID"
and "SCHEMA_A"."LIBRARY_ITEMS"."IS_PRIMARY" = 1
)
where "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" is not null
order by "SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" desc
) "alias_62833117"
where "maxFileId" = 1
) "x"
where rownum <= (0 + 10)
)
where "rn" > 0
order by "rn"
这会导致 SQL 异常（ORA-00904: "SCHEMA_A"."FILES"."FILE_ID": invalid identifier -- Error at Line: 26 Column: 7）。
只使用第一组别名会导致错误的 SQL 查询，因为 jOOq 的模拟 LIMIT 不使用别名，而是使用全名。
final LkuCode libraryType = LkuCode.LKU_CODE.as("LibraryType");
final Field<Integer> maxFileId = DSL.rowNumber()
.over(DSL.partitionBy(co.OBJECT_ID).orderBy(f.FILE_ID.desc().nullsLast()))
.as("maxFileId");
final Field<String> pTitle = p.TITLE.as("pTitle");
final Field<String> pCode = libraryType.CODE.as("pCode");
final Field<String> description = p.DESCRIPTION.as("description");
final Field<BigDecimal> coid = co.OBJECT_ID.as("coid");
final Field<BigDecimal> viewCount = co.VIEW_COUNT.as("viewCount");
final Field<BigDecimal> fileId = f.FILE_ID.as("fileId");
final Select<Record7<String, String, String, BigDecimal, BigDecimal, BigDecimal, Integer>> query = readContext
.select(pTitle, pCode, description, coid, viewCount, fileId, displayPos)
.from(readContext
.select(pTitle, pCode, description, coid, viewCount, fileId, maxFileId)
产生 sn-p：
select
"v0" "pTitle",
"v1" "pCode",
"v2" "description",
"v3" "coid",
"v4" "viewCount",
"v5" "fileId",
"v6" "displayPos"
from (
select
"x"."v0",
"x"."v1",
"x"."v2",
"x"."v3",
"x"."v4",
"x"."v5",
"x"."v6",
rownum "rn"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE" "v0",
"LibraryType"."CODE" "v1",
"SCHEMA_A"."LIBRARY"."DESCRIPTION" "v2",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" "v3",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" "v4",
"SCHEMA_A"."FILES"."FILE_ID" "v5",
rownum "v6"
from (
select
"SCHEMA_A"."LIBRARY"."TITLE" "pTitle",
"LibraryType"."CODE" "pCode",
"SCHEMA_A"."LIBRARY"."DESCRIPTION" "description",
"SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" "coid",
"SCHEMA_A"."AC_ASSOC_TABLE"."VIEW_COUNT" "viewCount",
"SCHEMA_A"."FILES"."FILE_ID" "fileId",
row_number() over (partition by "SCHEMA_A"."AC_ASSOC_TABLE"."OBJECT_ID" order by "SCHEMA_A"."FILES"."FILE_ID" desc nulls last) "maxFileId"
【问题讨论】：
-
嗯，这不应该发生，而且我似乎无法立即重现它。您确定您使用的是
field(Name,Class<T>)而不是field(String,Class<T>)？另外，我可能误读了您的问题，但我认为您只发布了使用 jOOQ 3.4 的工作代码，而不是使用 3.7 发布的失败 Java 代码，对吗？ -
我本来希望有更多，但达到了字符数限制，不得不“删减”。你知道吗...我忘记了
.getName()返回一个String。我是否必须创建一个字段、一个名称，然后是第二个“别名”字段？如果你正在编写类似代码，你会如何做这种别名？仅显示一组别名（无查询）的示例将受到高度赞赏（如果您必须拥有一个别名字段，可能是 pTitle 和别名字段的示例）。 -
快速跟进问题：有没有办法消除对第二组变量的需求？
-
对不起，这是一个很大的问题，我有点迷茫。你是什么意思“你将如何做这个别名”？ “第二组变量”是什么意思？
-
大问题？什么会让你这么说？！ （开个玩笑）简化，我正在做的事情如下：1）获取一堆库条目及其文件2）现在将其归结为一个库-> *每个库项目的文件条目（该文件项将是“主要”文件项）3）只获取行n-m（再次，Oracle，所以jOOq模拟）因此，我在我的选择中为列别名（否则事情会中断），但我必须制作两个变量 -第一个告诉最里面的选择给列一个别名，第二个告诉其他选择使用。有没有更好的办法？