Question

我已经通过liquibase将oracle数据库迁移到Microsoft SQL Server，但是仍然有些SQL语句不起作用。这个在oracle中看起来像这样：

#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed 
  examples.
## 

# Default server configuration

upstream app {
 # Path to Puma SOCK file, as defined previously
 server unix:/tmp/gms-puma.sock fail_timeout=0;
}

server {
 listen 8001;
 server_name localhost;

 root /home/deploy_user/gms/current/public;

 try_files $uri/index.html $uri @app;

  location / {
   proxy_set_header X-Forwarded-Proto $scheme;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header Host $host;
   proxy_redirect off;
   proxy_http_version 1.1;
   proxy_set_header Connection '';
   proxy_pass http://app;
  }

  location ~ ^/(assets|fonts|system)/|favicon.ico|robots.txt {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}

将其迁移到Microsoft SQL Server后，如下所示：

CREATE OR REPLACE VIEW "BP_RESULTS_VIEW" (
BP_ID,                                     
RES_NAME,                                     
RES_LONG_NAME,                                     
MEDIAN,                                    
LOW_HINGE,                                 
HIGH_HINGE,                                
H_SPREAD,                                  
INNER_FENCE_LOW,                           
INNER_FENCE_HIGH,
OUTER_FENCE_LOW,
OUTER_FENCE_HIGH,
LOW_NOTCH,
HIGH_NOTCH,
LOW_ADJACENT_VALUE,
HIGH_ADJACENT_VALUE)
  AS 
SELECT 
r.BP_ID,                                     
rv.RES_NAME,                                     
rv.RES_LONG_NAME,                                     
r.MEDIAN,                                    
r.LOW_HINGE,                                 
r.HIGH_HINGE,                                
r.H_SPREAD,                                  
r.INNER_FENCE_LOW,                           
r.INNER_FENCE_HIGH,
r.OUTER_FENCE_LOW,
r.OUTER_FENCE_HIGH,
r.LOW_NOTCH,
r.HIGH_NOTCH,
r.LOW_ADJACENT_VALUE,
r.HIGH_ADJACENT_VALUE
FROM 
bp_results r, 
results_view_display rv 
WHERE 
CAST (rv.value AS INT) = r.bp_id AND 
rv.type = 'BOX';

但是当我要执行它时，总是会发生此错误：

CREATE OR REPLACE FORCE VIEW BP_RESULTS_VIEW (BP_ID, RES_NAME, RES_LONG_NAME, MEDIAN,
LOW_HINGE, HIGH_HINGE, H_SPREAD, INNER_FENCE_LOW, INNER_FENCE_HIGH,
OUTER_FENCE_LOW, OUTER_FENCE_HIGH, LOW_NOTCH, HIGH_NOTCH, 
LOW_ADJACENT_VALUE, HIGH_ADJACENT_VALUE) AS SELECT 
r.BP_ID,                                     
rv.RES_NAME,                                     
rv.RES_LONG_NAME,                                     
r.MEDIAN,                                    
r.LOW_HINGE,                                 
r.HIGH_HINGE,                                
r.H_SPREAD,                                  
r.INNER_FENCE_LOW,                           
r.INNER_FENCE_HIGH,
r.OUTER_FENCE_LOW,
r.OUTER_FENCE_HIGH,
r.LOW_NOTCH,
r.HIGH_NOTCH,
r.LOW_ADJACENT_VALUE,
r.HIGH_ADJACENT_VALUE
FROM 
bp_results r, 
results_view_display rv 
WHERE 
CAST (rv.value AS INT) = r.bp_id AND 
rv.type = 'BOX'
GO

我不明白为什么，因为REPLACE语句也存在于SQL Server中。似乎也无法识别CAST命令。我正在使用Microsoft SQL Server Management Studio 17

Answer 1

在SQL Server 2016 SP1和更高版本（包括Azure SQL数据库）中，使用CREATE OR ALTER VIEW获得等效功能。在SQL Server的早期版本中，必须先删除视图，然后是CREATE VIEW和GRANT权限。

Answer 2

SQL Server不支持CREATE OR REPLACE VIEW。

相反，是第一次创建视图。然后只需使用ALTER VIEW。那是最简单的方法。您还可以删除视图并重新创建它。

MSSQL在“ REPLACE”附近的语法不正确

2 个答案: