Sql 基于多个条件和列将列数据拆分为单独的列

我需要拆分下面给出的列数据，包括查询和值

create table dep (
    a1 varchar(17),
    a2 char(2),
    a3 varchar(50),
    a4 int,
    a5 int,
    a6 int, 
    a7 char(1)
)

insert into dep (a1,a2,a3,a4,a5,a6,a7) values(507,01,'abc1',30,1,2,1)
insert into dep (a1,a2,a3,a4,a5,a6,a7) values(507,02,'abc2',31,2,1,0)
insert into dep (a1,a2,a3,a4,a5,a6,a7) values(507,03,'abc3',32,1,6,1)
insert into dep (a1,a2,a3,a4,a5,a6,a7) values(507,04,'abc4',33,1,3,0)
insert into dep (a1,a2,a3,a4,a5,a6,a7) values(507,05,'abc5',34,2,4,1)

需要拆分a2列及其对应的a3、a4、a5列。 输出如下：

a1  b1  b2  b3  b4  b5  c1    c2 c3  c4 c5  d1   d2 d3  d4  d5
507 abc 01  30  1   2   abc3  03 32  1  6   abc5 05 34  2   4

---

如果a7为0，则应跳过该记录。

IMHO；如果我正确理解你的要求；我认为，作为静态查询，您可以使用如下查询：

SELECT a1
    , MAX(CASE WHEN rn = 1 THEN a2 END) b1
    , MAX(CASE WHEN rn = 1 THEN a3 END) b2
    , MAX(CASE WHEN rn = 1 THEN a4 END) b3
    , MAX(CASE WHEN rn = 1 THEN a5 END) b4
    , MAX(CASE WHEN rn = 1 THEN a6 END) b5
    , MAX(CASE WHEN rn = 2 THEN a2 END) c1
    , MAX(CASE WHEN rn = 2 THEN a3 END) c2
    , MAX(CASE WHEN rn = 2 THEN a4 END) c3
    , MAX(CASE WHEN rn = 2 THEN a5 END) c4
    , MAX(CASE WHEN rn = 2 THEN a6 END) c5
    , MAX(CASE WHEN rn = 3 THEN a2 END) d1
    , MAX(CASE WHEN rn = 3 THEN a3 END) d2
    , MAX(CASE WHEN rn = 3 THEN a4 END) d3
    , MAX(CASE WHEN rn = 3 THEN a5 END) d4
    , MAX(CASE WHEN rn = 3 THEN a6 END) d5
FROM (
    SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM dep
    WHERE a7 = 1) t
GROUP BY a1;

DECLARE @sql varchar(max) = 'SELECT a1';
SELECT
    @sql = @sql + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a2 END) ' + CHAR(64 + rn) + '1' 
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a3 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a4 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a5 END) ' + CHAR(64 + rn) + '1'
FROM (
    SELECT *
        , ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM #dep
    WHERE a7 = 1) t;

SET @sql = @sql + 'FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn FROM dep WHERE a7 = 1) t GROUP BY a1';
EXEC(@sql);

DECLARE @sql nvarchar(max) = 'SELECT FamilyId', @maxDepe int;

SELECT @maxDepe = max(seq) 
FROM (
    SELECT *
        , ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) As seq
    FROM depe) dt;

WITH CTE(i) AS (
    SELECT 1
    UNION ALL
    SELECT i + 1
    FROM CTE 
    WHERE i < @maxDepe)
SELECT @sql = @sql +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN MemberName END) Dependent_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Age END) Age_' + CAST(i as varchar(3)) + 
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Gender END) Gender_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN RelationCode END) RelationCode_' + CAST(i as varchar(3))
FROM CTE;

SELECT @sql = @sql + ' FROM (SELECT *, ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) seq FROM depe) dt GROUP BY FamilyId';

EXEC(@sql);

动态SQL的解决方案可以是这样的：

SELECT a1
    , MAX(CASE WHEN rn = 1 THEN a2 END) b1
    , MAX(CASE WHEN rn = 1 THEN a3 END) b2
    , MAX(CASE WHEN rn = 1 THEN a4 END) b3
    , MAX(CASE WHEN rn = 1 THEN a5 END) b4
    , MAX(CASE WHEN rn = 1 THEN a6 END) b5
    , MAX(CASE WHEN rn = 2 THEN a2 END) c1
    , MAX(CASE WHEN rn = 2 THEN a3 END) c2
    , MAX(CASE WHEN rn = 2 THEN a4 END) c3
    , MAX(CASE WHEN rn = 2 THEN a5 END) c4
    , MAX(CASE WHEN rn = 2 THEN a6 END) c5
    , MAX(CASE WHEN rn = 3 THEN a2 END) d1
    , MAX(CASE WHEN rn = 3 THEN a3 END) d2
    , MAX(CASE WHEN rn = 3 THEN a4 END) d3
    , MAX(CASE WHEN rn = 3 THEN a5 END) d4
    , MAX(CASE WHEN rn = 3 THEN a6 END) d5
FROM (
    SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM dep
    WHERE a7 = 1) t
GROUP BY a1;

DECLARE @sql varchar(max) = 'SELECT a1';
SELECT
    @sql = @sql + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a2 END) ' + CHAR(64 + rn) + '1' 
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a3 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a4 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a5 END) ' + CHAR(64 + rn) + '1'
FROM (
    SELECT *
        , ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM #dep
    WHERE a7 = 1) t;

SET @sql = @sql + 'FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn FROM dep WHERE a7 = 1) t GROUP BY a1';
EXEC(@sql);

DECLARE @sql nvarchar(max) = 'SELECT FamilyId', @maxDepe int;

SELECT @maxDepe = max(seq) 
FROM (
    SELECT *
        , ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) As seq
    FROM depe) dt;

WITH CTE(i) AS (
    SELECT 1
    UNION ALL
    SELECT i + 1
    FROM CTE 
    WHERE i < @maxDepe)
SELECT @sql = @sql +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN MemberName END) Dependent_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Age END) Age_' + CAST(i as varchar(3)) + 
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Gender END) Gender_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN RelationCode END) RelationCode_' + CAST(i as varchar(3))
FROM CTE;

SELECT @sql = @sql + ' FROM (SELECT *, ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) seq FROM depe) dt GROUP BY FamilyId';

EXEC(@sql);

编辑：在您的情况下，我认为您可以使用如下查询：

SELECT a1
    , MAX(CASE WHEN rn = 1 THEN a2 END) b1
    , MAX(CASE WHEN rn = 1 THEN a3 END) b2
    , MAX(CASE WHEN rn = 1 THEN a4 END) b3
    , MAX(CASE WHEN rn = 1 THEN a5 END) b4
    , MAX(CASE WHEN rn = 1 THEN a6 END) b5
    , MAX(CASE WHEN rn = 2 THEN a2 END) c1
    , MAX(CASE WHEN rn = 2 THEN a3 END) c2
    , MAX(CASE WHEN rn = 2 THEN a4 END) c3
    , MAX(CASE WHEN rn = 2 THEN a5 END) c4
    , MAX(CASE WHEN rn = 2 THEN a6 END) c5
    , MAX(CASE WHEN rn = 3 THEN a2 END) d1
    , MAX(CASE WHEN rn = 3 THEN a3 END) d2
    , MAX(CASE WHEN rn = 3 THEN a4 END) d3
    , MAX(CASE WHEN rn = 3 THEN a5 END) d4
    , MAX(CASE WHEN rn = 3 THEN a6 END) d5
FROM (
    SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM dep
    WHERE a7 = 1) t
GROUP BY a1;

DECLARE @sql varchar(max) = 'SELECT a1';
SELECT
    @sql = @sql + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a2 END) ' + CHAR(64 + rn) + '1' 
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a3 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a4 END) ' + CHAR(64 + rn) + '1'
                + ',MAX(CASE WHEN rn = ' + CAST(rn as varchar(5)) + ' THEN a5 END) ' + CHAR(64 + rn) + '1'
FROM (
    SELECT *
        , ROW_NUMBER() OVER (ORDER BY a2) as rn
    FROM #dep
    WHERE a7 = 1) t;

SET @sql = @sql + 'FROM (SELECT *, ROW_NUMBER() OVER (ORDER BY a2) as rn FROM dep WHERE a7 = 1) t GROUP BY a1';
EXEC(@sql);

DECLARE @sql nvarchar(max) = 'SELECT FamilyId', @maxDepe int;

SELECT @maxDepe = max(seq) 
FROM (
    SELECT *
        , ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) As seq
    FROM depe) dt;

WITH CTE(i) AS (
    SELECT 1
    UNION ALL
    SELECT i + 1
    FROM CTE 
    WHERE i < @maxDepe)
SELECT @sql = @sql +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN MemberName END) Dependent_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Age END) Age_' + CAST(i as varchar(3)) + 
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN Gender END) Gender_' + CAST(i as varchar(3)) +
    ',MAX(CASE WHEN seq = ' + CAST(i as varchar(3)) + ' THEN RelationCode END) RelationCode_' + CAST(i as varchar(3))
FROM CTE;

SELECT @sql = @sql + ' FROM (SELECT *, ROW_NUMBER() OVER (PARTITION BY FamilyId ORDER BY MemberID) seq FROM depe) dt GROUP BY FamilyId';

EXEC(@sql);

---

您正在使用什么RDBMS？你是说对应栏而不是对应栏吗？a2、a3、a4等也发生了什么？您是否试图转置a7！=0？使用sql server 2014，a1是主列，我需要根据a1、a2和a7拆分数据假设如果a2=01和a7=1，那么数据应该拆分为01，就像我从a4、a5、a6列名b1、b2、c1中的对应列数据拆分一样，c2是定义的输出列名如果a2=02和a7=0，则的数据不应拆分，它应检查下一行的a2和a7值如果a2值为1到16，并且基于a1和a2的分组，只有a7状态只能为1到5？我有数百万行，a2只有16个唯一值选择URN，当rn=1时选择MAXCASE，然后选择MemberID END b1，rn=1时的MAXCASE，然后是MemberName END b2；rn=1时的MAXCASE，然后是MemberName END b3；rn=1时的MAXCASE，然后是年龄END b4；rn=1时的MAXCASE，然后是RelationCode END b5；rn=2时的MAXCASE，然后是MemberID END c1；rn=2时的MAXCASE，然后是MemberName END c2；rn=2时的MAXCASE，然后是性别END c3，当rn=2时MAXCASE结束c4，当rn=2时MAXCASE结束c5，当rn=3时MAXCASE结束d1，当rn=3时MAXCASE结束d2，当rn=3时MAXCASE结束d3，当rn=3时MAXCASE结束d4，当rn=3时MAXCASE结束d5，rn=4时的MAXCASE，然后是MemberID端e1；rn=4时的MAXCASE，然后是MemberName端e2；rn=4时的MAXCASE，然后是性别端e3；rn=4时的MAXCASE，然后是年龄端e4；rn=4时的MAXCASE，然后是关系代码端e5；rn=5时的MAXCASE，然后是MemberID端f1；rn=5时的MAXCASE，然后是MemberName端f2，rn=5时的MAXCASE，然后是性别结束f3，rn=5时的MAXCASE，然后是年龄结束f4，rn=5时的MAXCASE，然后是关系代码结束f5，从SELECT*，按成员ID排序的行数作为rn，从从属位置注册='1't按URN分组；