RETURNS "pg_catalog"."int4" AS $BODY$ declare returnvalue integer; BEGIN UPDATE road_jcpd_record rjr set road_lst_id = rl.id from road_lst rl where rl.road_code = rjr.road_code and rl.road_code = road_code_param ; GET DIAGNOSTICS returnvalue = ROW_COUNT; return returnvalue; END$BO...
row_recordVARCHAR(200); arr_lengthinteger;BEGINloop_index=1;FORrow_recordIN(selecttablenamefrompg_tableswhereschemaname=in_param_schema ) LOOP IF (SELECTcount(*)FROM(SELECTC.relname, A.attnameAScolumn_name, A.attnotnullASNOTNULL, format_type ( A.atttypid, A.atttypmod )ASTYPE, col_descr...
week-周 month-月 year-年 select now() - '182 day' :: INTERVAL as "time" 1. 分组取其中指定的数据 WITH ab AS ( SELECT pump_frequency_sensor, pump_frequency_cmd, device_id, "local_create_time", ROW_NUMBER ( ) OVER ( PARTITION BY device_id ORDER BY "local_create_time" DESC ) AS...
username, COUNT(click_url) AS cnt FROM user_clicks GROUP BY TUMBLE(ts, INTERVAL '1' MINUTE), username ; INSERT INTO tumble_output SELECT TUMBLE_START(rowtime, INTERVAL '1' HOUR), TUMBLE_END(rowtime, INTERVAL '1' HOUR), username, SUM(cnt) FROM one_minute_window_output GROUP BY TUMBLE(...
ROW_COUNT 与 GET DIAGNOSTICS 命令结合使用。它显示向下发送至 SQL 引擎的上一个 SQL 命令处理的行数。 下面是一个示例。 CREATEORREPLACEPROCEDUREsp_row_count()AS$$DECLAREinteger_varint;BEGININSERTINTOtbl_row_countVALUES(1);GETDIAGNOSTICS integer_var :=ROW_COUNT; RAISE INFO'rows inserted = %', int...
(&result);//行数column_count=duckdb_column_count(&result);//列数for(idx_t row=0;row<row_count;row++){ExecClearTuple(slot);for(idx_t col=0;col<column_count;col++){if(duckdb_value_is_null(&result,col,row))slot->tts_isnull[col]=true;else{slot->tts_isnull[col]=false;quack_...
I haven't tried this so am not certain it works, but you SHOULD be able to get the row counts you want if you split your queries up. For example: <?php $result=pg_query('BEGIN; INSERT INTO foo (bar) VALUES (\'baz\';'); ...
test=# select count(id1) from lzzhang;count---2(1 row) 这里我们简单分成三种类型的count 1. 列名(id/id1)-只计算非null的数据 2. 无参(*)–计算全部数据 3. 常量(1/const_string)–计算全部数据 count只计算非null的数据。 三种方式在ExecInterpExpr函数中的处理 列名...
stakind==5 elem_count_histogram staopN 一个用于生成这些存储在第N个“槽位”的统计信息的操作符。 比如,一个柱面图槽位会用<操作符,该操作符定义了该数据的排序顺序。 pg_operator.oid stacollN 排序规则用于导出存储在第N个“槽”中的统计信息。例如,可排序列的直方图槽将显示定义数据排序顺序的排序规则。