A.personmemberid = ' JCNPRH39681 ' and B.referenceid = ' JCNPRH39681 ' (a = b, b = ' number ', a = ' number ')Select A.personmemberid, * from Chineseresume a,personmember b where B.referenceid = ' JCNPRH39681 ' and A.personmemberid = ' JCNPRH39681 ' (B = ' number ', A = ' number ')49,(1) If no owner code is entered THEN code1=0 code2=9999 ELSE code1=code2= owner code End IF Execute SQL statement as: Select owner name from P2000 Where owner code GT;=:
with the writeSelect A.personmemberid, * from Chineseresume a,personmember b where Personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' (A = b, b = ' number ')Select A.personmemberid, * from Chineseresume a,personmember b where A.personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' and B.referenceid = ' JCNPRH39681 ' (a = b, b = ' number ', a = ' number ')Select A.personmemberid, * from Chineseresume a,personmember b where B.referenceid = ' JCNPRH39681 ' and A.
. query Association and write order Select a. personMemberID, * from chineseresume a, personmember bwhere personMemberID = B. referenceid and a. personMemberID = 'jcnprh1_1 '(A = B, B = 'number ') Select. personMemberID, * from chineseresume a, personmember bwhere. personMemberID = B. referenceid and. personMemberID = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select a. personMemberID, * from chineseresume a, personmember bwhere B. referenceid = 'jcnprh
. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select. personMemberID, * from chineseresume a, personmember B where B. referenceid = 'jcnprh1_1 'and. personMemberID = 'jcnprh1_1' (B = 'number', A = 'number ') 49, (1) IF no owner code is entered, THEN code1 = 0 code2 = 9999 ELSE code1 = code2 = owner code end if the SQL statement executed is: Select owner name FROM P2000 Where owner code> =: code1 AND owner code (2) IF no owner
and a. personMemberID = 'jcnprh1_1 '(A = B, B = 'number ') Select. personMemberID, * from chineseresume a, personmember B where. personMemberID = B. referenceid and. personMemberID = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select. personMemberID, * from chineseresume a, personmember B where B. referenceid = 'jcnprh1_1 'and. personMemberID = 'jcnprh1_1' (B = 'number', A = 'number ')
49,
(1) IF no owner code is entered, THEN code1 = 0 code2 = 9999 ELSE
. referenceid and a. personMemberID = 'jcnprh1_1 '(A = B, B = 'number ')Select. personMemberID, * from chineseresume a, personmember B where. personMemberID = B. referenceid and. personMemberID = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ')Select. personMemberID, * from chineseresume a, personmember B where B. referenceid = 'jcnprh1_1 'and. personMemberID = 'jcnprh1_1' (B = 'number', A = 'number ')49,(1) IF no owner code is entered, THEN code1 = 0 code2 = 99
. query Association and write order Select a. personmemberid, * From chineseresume A, personmember B where personmemberid = B. referenceid and A. personmemberid = 'jcnprh1_1 '(A = B, B = 'number ') Select. personmemberid, * From chineseresume A, personmember B where. personmemberid = B. referenceid and. personmemberid = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select. personmemberid, * From chineseresume A, personmember B where B. referenceid = 'jcnpr
, personmember B where personMemberID = B. referenceid and a. personMemberID = 'jcnprh1_1 '(A = B, B = 'number ') Select. personMemberID, * from chineseresume a, personmember B where. personMemberID = B. referenceid and. personMemberID = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select. personMemberID, * from chineseresume a, personmember B where B. referenceid = 'jcnprh1_1 'and. personMemberID = 'jcnprh1_1' (B = 'number', A = 'number ') 49, (1) IF no
code1 = 0 code2 = 9999 else code1 = code2 = owner code end ifRun the SQL statement: Select owner name from p2000 where owner code> =: code1 and owner code (2) If no owner code is entered, then select owner name from p2000 else code = owner code selectOwner code from p2000 where owner code =: code end ifThe first method only uses one SQL statement, and the seco
, instead of waiting for the DBMS to convert at runtime. Conversion of the same character and integer data. 48. query Association and write order Select a. personmemberid, * From chineseresume A, personmember B where personmemberid = B. referenceid and A. personmemberid = 'jcnprh1_1 '(A = B, B = 'number ') Select. personmemberid, * From chineseresume A, personmember B where. personmemberid = B. referenceid and. personmemberid = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number
') Select. personmemberid, * From chineseresume A, personmember B where. personmemberid = B. referenceid and. personmemberid = 'jcnprh1_1 'and B. referenceid = 'cnprh1_1 '(A = B, B = 'number', A = 'number') Select. personmemberid, * From chineseresume A, personmember B where B. referenceid = 'jcnprh1_1 'and. personmemberid = 'jcnprh1_1' (B = 'number', A = 'number ')
49,
(1) If no owner code is entered, then code1 = 0 code2 = 9999 else code1 = code2 = owner code end if the SQL statement executed
= 'cnprh00001' (A = B, B = 'number', A = 'number ')Select. personmemberid, * From chineseresume A, personmember B where B. referenceid = 'jcnprh1_1 'and. personmemberid = 'jcnprh1_1' (B = 'number', A = 'number ')49,(1) If no owner code is entered, then code1 = 0 code2 = 9999 else code1 = code2 = owner code end if the SQL statement executed is: Select owner name from p2000 where owner code> =: code1 and owner code (2) If no owner code is entered, the
Order of the Write
Select A.personmemberid, * from Chineseresume a,personmember b where Personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' (A = b, b = ' number ')
Select A.personmemberid, * from Chineseresume a,personmember b where A.personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' and B.referenceid = ' JCNPRH39681 ' (a = b, b = ' number ', a = ' number ')
Select A.personmemberid, * from Chineseresume a,personmember b where B.referenceid = ' JCNPRH39681 '
association with the Order of the WriteSelect A.personmemberid, * from Chineseresume a,personmember b where Personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' (A = b, b = ' number ') Select A.personmemberid, * from Chineseresume a,personmember b where A.personmemberid = B.referenceid and A.personmemberid = ' JCNPRH39681 ' and B.referenceid = ' JCNPRH39681 ' (a = b, b = ' number ', a = ' number ') Select A.personmemberid, * from Chineseresume a,personmember b where B.referen
type in this statement, the optimizer optimizes it to convert (float,3000), because 3000 is an integer, We should use 3000.0 in programming instead of waiting for the DBMS to be transformed by the runtime. Conversions of the same character and integer data.
The order in which the query is associated with the writeselecta.personmemberid,*fromchineseresumea,personmemberbwhere personmemberid=b.referenceidanda.personmemberid= ' JCNPRH39681 ' (a =B,B= ' number ') Selecta.personmemberid,*fromchine
code1 = 0 code2 = 9999 else code1 = code2 = owner code end if the SQL statement executed is: Select owner name from p2000 where owner code> =: code1 and owner code (2) If no owner code is entered, then select owner name from p2000 else code = owner code select owner code from p2000 where owner code =: the first method of code end if only uses one SQL statement,
the DBMS to convert data at runtime. Conversion of the same character and integer data.
48. query Association and write order
Select a. personmemberid, * From chineseresume A, personmember B where personmemberid= B. referenceid and A. personmemberid = 'jcnprh1_1' (A = B, B = 'number ')Select a. personmemberid, * From chineseresume A, personmember B where a. personmemberid= B. referenceid and A. personmemberid = 'jcnprh1_1 'and B. referenceid = 'jcnprh1_1 '(
A = B, B = 'number', A = 'number ')Se
. personMemberID = 'jcnprh1_1 '(A = B, B = 'number ') Select. personMemberID, * from chineseresume a, personmember B where. personMemberID = B. referenceid and. personMemberID = 'jcnprh1_1 'and B. referenceid = 'cnprh00001' (A = B, B = 'number', A = 'number ') Select. personMemberID, * from chineseresume a, personmember B where B. referenceid = 'jcnprh1_1 'and. personMemberID = 'jcnprh1_1' (B = 'number', A = 'number ')
49,
(1) If no owner code is entered, then code1 = 0 code2 = 9999 el
. Analyze select emp_name form employee where salary> 3000 in this statement, if salary is of the Float type, the optimizer optimizes it to Convert (float, 3000 ), because 3000 is an integer, we should use 3000.0 during programming, instead of waiting for the DBMS to convert at runtime. Conversion of the same character and integer data.48. query Association and write orderSelect a. personMemberID, * from chineseresume a, personmember B where personMemberID = B. referenceid and a. personMemberID
value of the system. 47. Analyze select emp_name form employee where salary> 3000 in this statement, if salary is of the float type, the optimizer optimizes it to convert (float, 3000 ), because 3000 is an integer, we should use 3000.0 during programming, instead of waiting for the DBMS to convert. Conversion of the same character and integer data. 48. query Association and write order Select a. personmemberid, * From chineseresume A, personmember B where personmemberid = B. referenceid a
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