Oracle数据库中找出空表 无 DECLARE v_table tabs.table_name%TYPE; v_sql VARCHAR2(888); v_q NUMBER; CURSOR c1 IS SELECT table_name tn FROM tabs; TYPE c IS REF CURSOR; c2 c; BEGIN DBMS_OUTPUT.PUT_LINE('以下为空数据表的表名:'); FOR r1 IN c1 LOOP
Oracle数据库中找出空表
DECLARE
v_table tabs.table_name%TYPE;
v_sql VARCHAR2(888);
v_q NUMBER;
CURSOR c1 IS
SELECT table_name tn FROM tabs;
TYPE c IS REF CURSOR;
c2 c;
BEGIN
DBMS_OUTPUT.PUT_LINE('以下为空数据表的表名:');
FOR r1 IN c1 LOOP
v_table :=r1.tn;
v_sql :='SELECT COUNT(*) q FROM '||v_table;
OPEN c2 FOR v_sql;
LOOP
FETCH c2 INTO v_q;
EXIT WHEN c2%NOTFOUND;
IF v_q=0 THEN
DBMS_OUTPUT.PUT_LINE(v_table);
END IF;
END LOOP;
CLOSE c2;
END LOOP;
EXCEPTION
WHEN OTHERS THEN DBMS_OUTPUT.PUT_LINE('Error occurred');
END;
SELECT * FROM dba_segments WHERE blocks <= 1 AND segment_type = 'TABLE';
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