select count(*) into v_count from freetopolice where name=p_name; into也是赋值给游标的意思 if v_count >0 then GET DIAGNOSTIC语句用于获取前面执行的 SQL 语句的相关信息,常用于获取影响行数 GET DIAGNOSTICS v_rowcount := ROW_COUNT; RAISE EXCEPTION'%',v_result; 异常处理 例子用于if函数里面出现...
v_sql:='select count(i.cuid) pv,count(distinct i.cuid) uv from active_info_tmp i,lsb_cbh_test b where i.cuid = b.cuid and b.type_id=2'; execute v_sql into cm_pv,cm_uv; GET DIAGNOSTICS v_column = ROW_COUNT; v_endtime:=to_char(now(),'yyyy/mm/dd hh24:mi:ss'); inser...
GET DIAGNOSTICS捕获运行过程中的状态值 There are several ways to determine the effect of a command. The first method is to use the GET DIAGNOSTICS command, which has the form: GET [ CURRENT ] DIAGNOSTICS variable { = | := } item [ , ... ]; GET DIAGNOSTICS integer_var = ROW_COUNT;...
GET DIAGNOSTICS ex_result:=ROW_COUNT;ifex_result<>0thenreturnValue:='{"SUCCESS":"插入操作'||ex_sql||'成功!"}';elsereturnValue:='{"ERROR":"插入操作'||ex_sql||'失败!"}'; endif; END; $$ language plpgsql; 针对上面例子做下简单的分析 1. 首先这个PostgreSQL 函数接收三个参数。text[], 代...
GET DIAGNOSTICS variable = item [ , ... ]; 1. 其中的item可以是ROW_COUNT和RESULT_OID。ROW_COUNT表示上一条SQL命令处理的数据行的个数。RESULT_OID表示最近的SQL命令插入的最后一个数据行的OID。variable是一个变量。例如: GET DIAGNOSTICS integer_var = ROW_COUNT; ...
如果返回空, ROW_COUNT则不增加. digoal=> select * from tbl; id | info | crt_time —-+——+———- (0 rows) – 需要注意OLD的修改不会传递给下一个instead for each row触发器函数, 也不会传递给操作行的C函数, 也不会传递给returning. – 基表数据插入 digoal=> insert into tbl values (...
对于merge into语法的转换,在ADB for PG中先使用update进行更新,然后使用GET DIAGNOSTICS rowcount := ROW_COUNT;语句获取update更新的行数,如果update更新的行数为0,那么再使用insert语句进行插入。 MERGE INTO test1 t1 USING (SELECT t2.col1 col1, t3.col2 col2, FROM test2 t2, test3 t3) S ON S....
postgres=# CREATE OR REPLACE PROCEDURE p_row_count() AS $$ DECLARE v_row_count BIGINT; BEGIN delete from t1; GET DIAGNOSTICS v_row_count = ROW_COUNT; RAISE NOTICE '查询到的记录数为 % ',v_row_count; END; $$ LANGUAGE plpgsql; CREATE PROCEDURE postgres=# call p_row_count(); ...
BEGIN LOOP UPDATE your_table SET column1 = new_value1, column2 = new_value2 FROM ( SELECT id, new_value1, new_value2 FROM your_update_source ORDER BY id LIMIT batch_size OFFSET offset ) AS t WHERE your_table.id = t.id; GET DIAGNOSTICS offset = ROW_COUNT; EXIT WHEN offset = 0...
postgres=# select count(*) from tbl_lab where dict @> array[122562]::int8[] ; count --- 76 (1 row)Time:1087.094 ms (00:01.087) postgres=# set gin_fuzzy_search_limit =10; SETTime:0.174 ms postgres=# select count(*) from tbl_lab where dict @> array[122562]::int8[] ; count...