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Developer-C 11.1
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CREATE TABLE subgroups (subgroup_abbr_str VaRCHAR(2)); INSERT INTO subgroups VALUES ('AA'), ('BB'), ('BB'), ('CC'), ('DD'), ('DD'), ('DD')
Records: 7 Duplicates: 0 Warnings: 0
CREATE tABLE trad_new (present INT)
INSERT INTO trad_new VALUEs (1)
CREATE PROCEDURE FLAGITERATION() BEGIN DECLARE finished INTEGER DEFAULT 0; DECLARE _subgroup varchar(100) DEFAULT ""; -- declare cursor for subgroup_abbr_str DEClARE cursubgroup CURSOR FOR SELECT DISTINCT subgroup_abbr_str FROM subgroups; -- declare NOT FOUND handler DECLARE CONTINUE HANDLER FOR NOT FOUND SET finished = 1; OPEN cursubgroup; getsubgroup: LOOP FETCH cursubgroup INTO _subgroup; IF finished = 1 THEN LEAVE getsubgroup; END IF; SET @a := _subgroup; -- build email list SET @sql = CONCAT("CREATE TEMPORARY TABLE ",_subgroup," AS SELECT SUM(present) FROM trad_new;"); PREPARE stmt FROM @sql; EXECUTE stmt; END LOOP getsubgroup; CLOSE cursubgroup; DEALLOCATE PREPARE stmt; End
call FLAGITERATION()
SELECT * FROM AA;
SUM(present)
1