用二分法，把sql简化一下，定位到具体报错的行
SELECT COUNT(CASE WHEN sales_amount > 1000 THEN 1 ELSE NULL END) AS high_sales_count, COUNT(*) AS total_sales_count FROM sales_table; 这将返回两个计数:一个是销售额大于1000的记录数,另一个是总销售记录数。 去重计数: 如果表中包含重复记录,并且你只想计算唯一记录的数量,可以使用DISTINCT...
type_tbc_tas(--临时表,获取去年同期(2018年9月type='REQ')同比数量为:2条SELECTCOUNT(TYPE)AStbcFROMbiz_ticket TWHERE--同比时间T ."type"='REQ'ANDT .create_time>='2018-09-01 00:00:00'ANDT .create_time<='2018-09-30 23:59:59')SELECTcasewhent2.tc>0thenround(CAST(t1.zbc*100.0/t2...
dbms_output.put_line('scott`s sal is'||v_sal); case when v_sal<1000 then dbms_output.put_line('scott sal low than 1000'); when v_sal>1000 and v_sal<=2000 then dbms_output.put_line('scott sal between 1000 and 2000'); else dbms_output.put_line('scott sal height than 2000')...
(casewhen(selectcount(*)frompg_constraintwhereconrelid=a.attrelidandconkey[1]=attnumandcontype='f')>0then'是'else'否'end)as外键约束, (casewhena.attnotnull=truethen'是'else'否'end)asnullable, col_description(a.attrelid,a.attnum)ascommentfrompg_attribute awhereattstattarget=-1andattrelid...
SUM(CASE WHEN CAMP_STATUS IN ('30') THEN 1 ELSE 0 END) AS overruleCampCount FROM BMA_MARKET_CAMP WHERE USER_ID = #{userId} 1. 2. 3. 4. 5. 6. 7. 8. 1.2 SQL解释 这是一个SQL查询,用于从名为BMA_MARKET_CAMP的表中选择和计算数据。下面是对这个查询的逐行解释: ...
-- 查询lic_plate字段不为空的最近7天的数据selectcount(tn.lic_plate)ASnumber,tn.create_timeASpercentagefromtable_name tnwheretn.create_timein(SELECTDATE(T)ASDAYFROMgenerate_series((CURRENT_TIMESTAMP-INTERVAL'6 day') ::DATE,CURRENT_TIMESTAMP::DATE,'1 days')AST)ANDlic_plateisnotnullgroupbytn....
2>p_count =(select count(1) from table1); 3>select id,name into p_id,p_name from table1 where ...; 10.非过程非函数的语句使用if需要do $$ begin ... end $$; 但是不能像简单的语句那样,将类似@id的参数可以用NpgsqlCommand添加@id的参数,只能把参数值拼到sql中,否则报错,就很迷。
(case when ( select count(pg_constraint.*) from pg_constraint inner join pg_class on pg_constraint.conrelid = pg_class.oid inner join pg_attribute on pg_attribute.attrelid = pg_class.oid and pg_attribute.attnum = any(pg_constraint.conkey) inner join pg_type on pg_type.oid = pg_...
Python 提供了各种方法来操作列表，这是最常用的数据结构之一。使用列表时的一项常见任务是计算其中唯一值...