用于数据库设计的静态分析工具

发布于 2024-07-27 17:41:41 字数 1539 浏览 3 评论 0原文

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紅太極 2024-08-03 17:41:41

既然你提到了 PLSQL,我假设你正在使用 Oracle。 对于数据库设计,您可以编写一组主要在数据字典表上运行的简单 SQL 脚本。 查看以下示例规则和相同的 sql:

表名称不应大于 'N' 个字符

DEFINE owner_name = 'SCOTT';
DEFINE max_length = 5; 
set linesize 300;
spool table_name_violations.txt 
Select table_name, length(table_name) Length, 'Table name too long'  MSG
from ALL_TABLES where owner like '&owner_name' 
                      and length (table_name) > &max_length; 
spool off; 

列名称不应超过 'N' 个字符< /strong>

DEFINE owner_name = 'SCOTT';
DEFINE max_length = 5; 
set linesize 300;
spool column_name_violations.txt 
Select table_name, column_name, length(column_name) Length, 'column name too long'  MSG
from ALL_TAB_COLUMNS where owner like '&owner_name' 
                      and length (column_name) > &max_length; 
spool off;

列出表的所有有效外键列(假设您使用 fk 约束)

Define tab_name = 'EMP'
SELECT table_name, Column_name 
FROM user_tab_columns t1
WHERE NOT EXISTS (
      SELECT table_name, column_name
      FROM user_cons_columns 
      WHERE constraint_name IN (
            SELECT R_Constraint_name 
            FROM all_constraints t2,all_cons_columns t3 
            WHERE t2.constraint_name = t3.constraint_name 
            AND t3.column_name = t1.column_name 
            AND t2.constraint_type = 'R'
            AND t2.TABLE_name=t1.Table_name)
       ) 
       AND t1.table_name LIKE '&tab_name'

如果您不使用外键约束来提高性能,则需要将元信息存储在单独的表中并编写像上面一样的 SQL 脚本来检查现有数据上的 FK 违规情况。

Since you mention PLSQL, I assume you are using Oracle. For database design, you can write a set of simple SQL scripts that run primarily on the data dictionary tables. Look at the following example rule and the sql for the same:

Table name should not be greater than 'N' characters

DEFINE owner_name = 'SCOTT';
DEFINE max_length = 5; 
set linesize 300;
spool table_name_violations.txt 
Select table_name, length(table_name) Length, 'Table name too long'  MSG
from ALL_TABLES where owner like '&owner_name' 
                      and length (table_name) > &max_length; 
spool off; 

Column name should not exceed 'N' Characters

DEFINE owner_name = 'SCOTT';
DEFINE max_length = 5; 
set linesize 300;
spool column_name_violations.txt 
Select table_name, column_name, length(column_name) Length, 'column name too long'  MSG
from ALL_TAB_COLUMNS where owner like '&owner_name' 
                      and length (column_name) > &max_length; 
spool off;

List all VALID foreign key columns of a table (assuming you are using fk constraints)

Define tab_name = 'EMP'
SELECT table_name, Column_name 
FROM user_tab_columns t1
WHERE NOT EXISTS (
      SELECT table_name, column_name
      FROM user_cons_columns 
      WHERE constraint_name IN (
            SELECT R_Constraint_name 
            FROM all_constraints t2,all_cons_columns t3 
            WHERE t2.constraint_name = t3.constraint_name 
            AND t3.column_name = t1.column_name 
            AND t2.constraint_type = 'R'
            AND t2.TABLE_name=t1.Table_name)
       ) 
       AND t1.table_name LIKE '&tab_name'

In the event you are not using foreign key constraints to improve performance, you need to store meta information in separate tables and write ansql script like the one above to check for FK violations on existing data.

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