Updating table from another table datingfactory cz
Given that, we can: [email protected] select * from a 2 / ID A1 ---------- ------------------------- 1 Hello 2 World The following updates are equivalent as well - they do the same thing differently. REGISTRATION); RUN and Computer in BIG Busy mood(Hang). REGISTRATION(BIN, NAME, NAME_ALIAS, COR_GROUP, AUTHOBY, AUTHODATE, CG_NAME, ADD1, ADD2, ADD3, TEL1, FAX1, ADD5, ADD6, ADD7, TEL2, FAX2, ADD9, ADD10, ADD11, TEL3, FAX3, TP_TYPE, TRD_LINC, TRD_FY, TRD_AUTH, IMP_REG, EXP_REG, REG_TYPE, TIN, STATUS, PRE_BIN, DATREG, STAT_CHNG, ACT_CODE, ACT_MULT, ITEM_TYPE, OLD_ACT, APP_CAT, LCODE, ISSUE_DATE, VREG, M_POSI, MFUNC, SFUNC, LAST_USER, LAST_ACCS, TREG, PAY_FREQ, CREG, EREG, OREG, OP_BAL, OP_BAL_DT)select BIN, NAME, NAME_ALIAS,---- from VIS. In update portion i am facing another problem by ur recomended code. INSERT into abc values (RTRIM(col1), RTRIM(col2) .) There is another option where I can use SELECT RTRIM(col1), RTRIM(col2) from xxx where RTRIM(col1) = yyy and then directly use insert into target table without RTRIM.
It is best to use the above update of a JOIN if possible (optimizer has best chance of getting a good plan). REGISTRATION where not exists (select null from VIStemp. b)in privious question i told u that i am exporting incremental and edited data by using system date. In my B(big table record-79186) and in S(small table record-12871). Can you please tell me which option performs better if the number of records are in millions. I have a table t1 which is having all orders information.
Since you can't list more than one table in the Oracle UPDATE statement, you can use the Oracle EXISTS clause.
UPDATE tablename FROM ( SELECT column1, column2, column3, . FROM another_tablename) another SET column1 = another.column1, SET column2 = another.column2, SET column3 = another.column3, .
If it is incorrect, then you can get wrong results.
The reason I am mentioning this is because I have seen people write wrong where clauses and then wondering what went wrong because they specified the correct condition in the SET clause.
You can also perform more complicated updates in Oracle.
I am think of the way without using cursor, script as below. I don't understand what's the problem.i am going to give u full overview of my problem. The software is available in different portion of the country for data entry and report generation etc. What about: create global temporary table gtt ( id int primary key, cnt int ) on commit delete rows / you'll add that ONCE, it'll become part of your schema forever....It will need the primary key constraint on B though, if you do not have one BUT is unique, you can: [email protected] I can think of another instance (at least with v8.1.5) where the second example (updating the table via a subquery) works better than the first example (updating the joined tables). My last PL/SQL code was just a test as i was interested more in the performance during update, so i missed the commit point. REGISTRATION where vistemp.registration.bin=vis.registration.bin) /am i right? Whenever anyuser insert/update anything,system date is inserted with them and i am exporting that data by using that system date."AM I IN RIGHT WAY? Another table summary of orders tt1 which is having current year summation and respective previous year summation columns. Type ------------------------------- -------- ------------ ORDER_NUMBER NUMBER(10) ORDER_DATE DATE CY_ORD_AMT NUMBER PY_ORD_AMT NUMBER Order date is current year date.