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  • 在数据库中查找表

    1、通过表注释

     all_tab_comments(表的所有者、表名、表类型、表注释)字段:OWNER/ TABLE_NAME/ TABLE_TYPE/ COMMENTS

    select table_name from all_tab_comments t where t.owner = '' and  comments like '%%';

    2、通过表字段

    user_tab_columns(表/视图或Clusters名称、字段名、列ID、字段类型、长度、精度、小数点后位数、是否允许为空、密度、为空的个数、distinct个数。。。)

    字段:OWNER/ TABLE_NAME/ COLUMN_NAME/ COLUMN_ID/ DATA_TYPE/ DATA_LENGTH/ DATA_PRECISION/ DATA_SCALE/ NULLABLE/ DEFAULT_LENGTH/

                DENSITY/ NUM_NULLS/ NUM_BUCKETS/ LAST ANALYZED/ CHAR_COL_DEFAULT_LENGTH/ AVG_COL_LEN/ HISTOGRAM 

    select * from user_tab_columns where  column_name LIKE '%FX%' and data_type = 'VARCHAR2';

    dba_tab_columns(表的所有者、表/视图或Clusters名称、字段名、列ID、字段类型、长度、精度、小数点后位数、是否允许为空、密度、为空的个数、distinct个数。。。)

    字段:TABLE_NAME/ COLUMN_NAME/ COLUMN_ID/ DATA_TYPE/ DATA_LENGTH/ DATA_PRECISION/ DATA_SCALE/ NULLABLE/ DEFAULT_LENGTH/

               DENSITY/ NUM_NULLS/ NUM_BUCKETS/ LAST ANALYZED/ CHAR_COL_DEFAULT_LENGTH/ AVG_COL_LEN/ HISTOGRAM 

    select * from dba_tab_columns where  column_name LIKE '%FX%' and data_type = 'VARCHAR2' and owner = 'GS_CXTDDJ';

    3、通过表其他信息

    all_tables(表的所有者、表名、在此分区中已使用的数据块数量)

    字段:OWNER/ TABLE_NAME/ TABLESPACE_NAME/ BLOCKS/ 

    select* from all_tables where table_name like '%FX%' and blocks>10 and owner='GS_CXTJ' order by block;
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  • 原文地址:https://www.cnblogs.com/dayuruozhi/p/8308597.html
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