SQL & PL/SQL :: Insert Using String Matches / Matching And Searching Match

i have three tables ot_cut_head,ot_cut_det and om_mc_master based on which fourth table ot_cut_opr and fifth table ot_cut_mc must get populated , Conditions are as follows

first one is based on job_no in ot_cut_head the selection criteria will be filtered,if the job number is like '%M' then type MISC will be chosen ,if job number is '%G' then GRAT TYPE will be picked from om_mc_master (Machine Master) and operations and machines based on this will be filtered.

Second all the cd_ps_desc will be taken from ot_cut_det and will be compared with om_mc_master to get their corresponding operation codes and machine codes , there can be 2 operations or 1 operation.

Finally if the match is found record will be inserted into ot_cut_opr and ot_cut_mc ,based on the criterias and what i want is the search criteria to be more flexible and if there are 2 operations 2 rows will be inserted and if one opeation is defined in om_mc_master ,then only one record will be inserted.

We have to make sure that if based on operation number stage will be populated ,if its first operation then stage will be 1 and if its second operation the stage will be 2.like previous operation also depends on them , the second operation will have the previous operation as first operation and so on.

CREATE TABLE om_mc_master ( mc_type VARCHAR2(12),mc_prof VARCHAR2(30),mc_prep_cd1 VARCHAR2(30),mc_mach_cd1 VARCHAR2
(30),mc_prep_cd2 VARCHAR2(30),mc_mach_cd2 VARCHAR2(30));
INSERT INTO OM_MC_MASTER VALUES ('MISC','TEE SCH','IR','HO','RE','HO');
insert into om_mc_master values('MISC','Vertical Brace','R','HM','I','HO');
insert into om_mc_master values('MISC','Pipe','IR','HO',NULL,NULL);
INSERT INTO OM_MC_MASTER VALUES ('GRAT','PL','RE','HO',NULL,NULL);
SQL> SELECT * FROM OM_MC_MASTER;
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