请阅读以了解该过程的步骤。
在Oracle数据库中,我们可以很容易地在模式内的表中找到我们要找的文本或关键词。由于我们可以搜索模式中的所有表,我们也可以在属于该模式的所需表内进行搜索。
如下面的PL/SQL块所示,我们要搜索的文本/关键词是在相关表的varchar列上进行的。
如上所述输入我们的定义后,我们可以通过Oracle SQL Developer或Toad运行下面的PL/SQL块。
PLSQL
DECLARE p_search_text CONSTANT VARCHAR2 (1000) := "SAMPLE SEARCH WRITE"; p_schema_name CONSTANT VARCHAR2 (1000) := "SAMPLE SCHEMA NAME"; p_table_name CONSTANT VARCHAR2 (1000) := "SAMPLE TABLE NAME";-- NULL (If FULL will work, give the table name null) TYPE r_column_data IS RECORD ( column_name SYS.DBA_TAB_COLUMNS.COLUMN_NAME%TYPE ); TYPE tr_column_data IS TABLE OF r_column_data INDEX BY PLS_INTEGER; ltr_column_data tr_column_data; TYPE tr_table IS TABLE OF VARCHAR2 (200) INDEX BY PLS_INTEGER; l_sql VARCHAR2 (1000); l_count NUMBER; ltr_table tr_table; l_found NUMBER := 0; l_column_name VARCHAR2 (100); BEGIN SELECT table_name BULK COLLECT INTO ltr_table FROM dba_tables WHERE owner = p_schema_name AND table_name LIKE "" || p_table_name || "" || "%" AND ROWNUM <= 19999 ORDER BY 1; DBMS_APPLICATION_INFO.set_module ("PV_FINDER", NULL); FOR i IN 1 .. ltr_table.COUNT LOOP DBMS_APPLICATION_INFO.set_client_info ( i || "/" || ltr_table.COUNT || " -> " || ltr_table (i)); SELECT col.column_name BULK COLLECT INTO ltr_column_data FROM sys.dba_tab_columns col INNER JOIN sys.dba_tables t ON col.owner = t.owner AND col.table_name = t.table_name WHERE col.table_name = ltr_table (i) AND col.DATA_TYPE = "VARCHAR2" ORDER BY col.column_id; FOR j IN 1 .. ltr_column_data.COUNT LOOP DBMS_APPLICATION_INFO.set_client_info ( j || "/" || ltr_column_data.COUNT || " -> " || ltr_column_data (j).column_name); l_sql := "SELECT /*+ PARALLEL (A 8)*/ count(1) from " || p_schema_name || "." || ltr_table (i) || " A WHERE " || ltr_column_data (j).column_name || " =""" || p_search_text || """"; EXECUTE IMMEDIATE l_sql INTO l_count; IF l_count > 0 THEN IF l_found = 0 THEN DBMS_OUTPUT.put_line ( "Search Keyword: " || p_search_text); DBMS_OUTPUT.put_line ( "-------------------------------------------"); END IF; DBMS_OUTPUT.put_line ("table name found : "||ltr_table (i) ); DBMS_OUTPUT.put_line ("column name found : " || ltr_column_data (j).column_name); DBMS_OUTPUT.put_line ("count : " || l_count); DBMS_OUTPUT.put_line ("sql name : " || l_sql); DBMS_OUTPUT.put_line ("*****"); l_found := l_found + 1; END IF; END LOOP; END LOOP; DBMS_APPLICATION_INFO.set_module (NULL, NULL); DBMS_APPLICATION_INFO.set_client_info (NULL); DBMS_OUTPUT.put_line ("-------------------------------------------"); DBMS_OUTPUT.put_line ("total number of tables searched : " || ltr_table.COUNT); DBMS_OUTPUT.put_line ("total number of tables found : " || l_found); END; /*select module,client_info from v$session where module like "%PV_FINDER%"*/
Search Keyword: SAMPLE SEARCH KEYWORD ------------------------------------------- table name found : TABLE - 1 column name found : COLUMN NAME count : 4 sql name : SELECT /*+ PARALLEL (A 8)*/ count(1) from SCHEMA_NAME.TABLE-1 A WHERE TABLE-1.COLUMN ="SAMPLE SEARCH KEYWORD" ***** table name found : TABLE - 2 column name found : COLUMN NAME count : 2 sql name : SELECT /*+ PARALLEL (A 8)*/ count(1) from SCHEMA_NAME.TABLE-2 A WHERE TABLE-1.COLUMN ="SAMPLE SEARCH KEYWORD" ***** table name found : TABLE - 3 column name found : COLUMN NAME count : 2 sql name : SELECT /*+ PARALLEL (A 8)*/ count(1) from SCHEMA_NAME.TABLE-3 A WHERE TABLE-1.COLUMN ="SAMPLE SEARCH KEYWORD" ***** table name found : TABLE - 4 column name found : COLUMN NAME count : 2 sql name : SELECT /*+ PARALLEL (A 8)*/ count(1) from SCHEMA_NAME.TABLE-4 A WHERE TABLE-1.COLUMN ="SAMPLE SEARCH KEYWORD" ***** ------------------------------------------- total number of tables searched : 72 total number of tables found : 4
oracle, plsql, oracle数据库, oracle表, 关键字搜索
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