Question

是否可以更改表名的一部分？

开始于：All_Reports_19920331_Performance_and_Condition_Ratios 改成： All_Reports_19920630_Performance_and_Condition_Ratios 改成： All_Reports_19920930_Performance_and_Condition_Ratios 改成： All_Reports_19921231_Performance_and_Condition_Ratios 改成： All_Reports_19930331_Performance_and_Condition_Ratios 改成： All_Reports_19930630_Performance_and_Condition_Ratios 改成： All_Reports_19930930_Performance_and_Condition_Ratios 更改为：All_Reports_19931231_Performance_and_Condition_Ratios

从1992年到2018年重复

我有一个来自政府监管机构FDIC的公开数据集，其中包含每个银行的信息。

此代码块仅查询一个财务季度。

SELECT 
  (SELECT
  replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
  ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts 
  date format from dd/mm/yyyy to yyyyq1 (financial 
  quarters)
  FROM 
  All_Reports_20170630_Performance_and_Condition_Ratios 
  as PCR) 
  AS Quarter,
  (SELECT 
  AVG(PCR.lnlsdepr)
  FROM 
  All_Reports_20170630_Performance_and_Condition_Ratios 
  as PCR) 
  AS NetLoansAndLeasesToDeposits,
  (SELECT sum(CAST(LD.IDdepsam as int))
  FROM 
 'All_Reports_20170630_Deposits_Based_on_the
 _$250,000_Reporting_Threshold' AS LD) 
 AS DepositAccountsWith$LessThan$250k

输出：

但是我需要查询20多年以来的100多个财务季度/表格。因此，我需要使用UNION ALL，并在每个[FROM]表名中更改5位数字。

以下是上述代码块被重用于查询多个财务季度（即查询多个表）的示例：

SELECT 
  (SELECT
   replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
   ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format from 
   dd/mm/yyyy to yyyyq1 (financial quarters)
   FROM All_Reports_20170630_Performance_and_Condition_Ratios as PCR) 
    AS Quarter,
  (SELECT 
   AVG(PCR.lnlsdepr)
  FROM All_Reports_20170630_Performance_and_Condition_Ratios as PCR) 
  AS NetLoansAndLeasesToDeposits,
  (SELECT sum(CAST(LD.IDdepsam as int))
  FROM 
  'All_Reports_20170630_Deposits_Based_on_the_$250,000_Reporting_Threshold' 
  AS LD) 
  AS DepositAccountsWith$LessThan$250k
 UNION ALL 
SELECT 
  (SELECT
   replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
  ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format from 
dd/mm/yyyy to yyyyq1 (financial quarters)
   FROM All_Reports_20170930_Performance_and_Condition_Ratios as PCR) 
    AS Quarter,
  (SELECT 
   AVG(PCR.lnlsdepr)
  FROM All_Reports_20170930_Performance_and_Condition_Ratios as PCR) 
  AS NetLoansAndLeasesToDeposits,
  (SELECT sum(CAST(LD.IDdepsam as int))
  FROM 
  'All_Reports_20170930_Deposits_Based_on_the_$250,000_Reporting_Threshold' 
   AS LD) 
   AS DepositAccountsWith$LessThan$250k
   UNION ALL 
   SELECT 
    (SELECT
      replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
      ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format 
       from dd/mm/yyyy to yyyyq1 (financial quarters)
    FROM All_Reports_20171231_Performance_and_Condition_Ratios as PCR) 
    AS Quarter,
    (SELECT 
    AVG(PCR.lnlsdepr)
   FROM All_Reports_20171231_Performance_and_Condition_Ratios as PCR) 
   AS NetLoansAndLeasesToDeposits,
   (SELECT sum(CAST(LD.IDdepsam as int))
   FROM 
   'All_Reports_20171231_Deposits_Based_on_the_$250,000_Reporting_Threshold' 
    AS LD) 
    AS DepositAccountsWith$LessThan$250k
  UNION ALL 
   SELECT 
     (SELECT
      replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
      ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format 
       from dd/mm/yyyy to yyyyq1 (financial quarters)
        FROM All_Reports_20180331_Performance_and_Condition_Ratios as PCR) 
         AS Quarter,
     (SELECT 
       AVG(PCR.lnlsdepr)
      FROM All_Reports_20180331_Performance_and_Condition_Ratios as PCR) 
      AS NetLoansAndLeasesToDeposits,
      (SELECT sum(CAST(LD.IDdepsam as int))
      FROM 
      'All_Reports_20180331_Deposits_Based_on_the
     _$250,000_Reporting_Threshold' AS LD) 
      AS DepositAccountsWith$LessThan$250k
      UNION ALL 
      SELECT 
      (SELECT
       replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
       ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format 
       from dd/mm/yyyy to yyyyq1 (financial quarters)
       FROM All_Reports_20180630_Performance_and_Condition_Ratios as PCR) 
       AS Quarter,
       (SELECT 
        AVG(PCR.lnlsdepr)
     FROM All_Reports_20180630_Performance_and_Condition_Ratios as PCR) 
  AS NetLoansAndLeasesToDeposits,
  (SELECT sum(CAST(LD.IDdepsam as int))
  FROM 
'All_Reports_20180630_Deposits_Based_on_the_$250,000_Reporting_Threshold' AS 
LD) AS DepositAccountsWith$LessThan$250k

UNION ALL 
SELECT 
  (SELECT
   replace(substr(PCR.repdte,6),'/','')||'q'||CAST(1+ . 
   ((substr(PCR.repdte,1,2)-1) / 3) AS INTEGER) --converts date format from 
   dd/mm/yyyy to yyyyq1 (financial quarters)
   FROM All_Reports_20170930_Performance_and_Condition_Ratios as PCR) 
    AS Quarter,
  (SELECT 
   AVG(PCR.lnlsdepr)
   FROM All_Reports_20170930_Performance_and_Condition_Ratios as PCR) 
   AS NetLoansAndLeasesToDeposits,
   (SELECT sum(CAST(LD.IDdepsam as int))
   FROM 
   'All_Reports_20170930_Deposits_Based_on_the_$250,000_Reporting_Threshold' 
   AS LD) 
    AS DepositAccountsWith$LessThan$250k

产出：财务5个季度（5个表格）。

更改复制/粘贴每个代码块，然后更改每个表名中的日期（例如 20170630 到 20170331 ）将非常耗时。并为每个表执行100多次。

有哪些解决方案可简化此过程？还是只需要复制/粘贴每个代码块并在三个位置更改财务季度。然后重复此过程100多次。

将表名从Q1更改为Q2的简便方法（要更改100多个表名）

0 个答案: