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OracleѧϰժҪϵÁÐ002

  1. UPDATE
      T_PAYMENT
    SET
      "FEE_CALC_DATE" = to_date(?, 'YYYY/MM/DD HH24:MI:SS')
    WHERE
      (T_PAYMENT."COMPANY_CD", T_PAYMENT."SLIP_TYP", T_PAYMENT."SLIP_CTRL_GRP", T_PAYMENT."SLIP_DATE", T_PAYMENT."SLIP_CD", T_PAYMENT."SEQ_NO") IN (
        SELECT
          T_PAYMENT."COMPANY_CD",
          T_PAYMENT."SLIP_TYP",
          T_PAYMENT."SLIP_CTRL_GRP",
          T_PAYMENT."SLIP_DATE",
          T_PAYMENT."SLIP_CD",
          T_PAYMENT."SEQ_NO"
        FROM
          T_PAYMENT,
          M_BANK_H,
          M_BANK,
          M_B_ACCT,
          M_BANK_H M_BANK_H2,
          M_BANK M_BANK2
        WHERE
          T_PAYMENT.PAY_BANK_CD = M_BANK_H.BANK_CD(+)
          AND T_PAYMENT.PAY_BANK_CD = M_BANK.BANK_CD(+)
          AND T_PAYMENT.PAY_BRANCH_CD = M_BANK.BANK_BR_CD(+)
          AND T_PAYMENT.PAY_OWN_B_ACCT_CD = M_B_ACCT.B_ACCT_CTRL_CD(+)
          AND M_B_ACCT.BANK_CD = M_BANK_H2.BANK_CD(+)
          AND M_B_ACCT.BANK_CD = M_BANK2.BANK_CD(+)
          AND M_B_ACCT.BANK_BR_CD = M_BANK2.BANK_BR_CD(+)
          AND T_PAYMENT.COMPANY_CD = ?
          AND T_PAYMENT.PAY_FIX_CTRL_ORG_CD = ?
          AND((? = '1'
          AND T_PAYMENT.PAY_DATE <= TO_DATE(?, 'YYYY/MM/DD'))
          OR ((? = '2'
          OR  ? = '3')
          AND T_PAYMENT.PAY_DATE BETWEEN TO_DATE(?, 'YYYY/MM/DD') AND TO_DATE(?, 'YYYY/MM/DD')))
          AND(T_PAYMENT.PAY_TARGET_TYP = '1'
          OR  T_PAYMENT.PAY_TARGET_TYP = '12')
          AND T_PAYMENT.DEL_FLG <> '1'
          AND M_B_ACCT.COMPANY_CD = ?
          AND((? = '1'
          AND T_PAYMENT.FEE_CALC_DATE IS NULL)
          OR (? = '2'
          AND T_PAYMENT.FEE_CALC_DATE IS NOT NULL))
      )
  2. ʹÓÃTRANSLATE()º¯Êý
    TRANSLATE(x, from_string, to_string)º¯ÊýÔÚxÖвéÕÒfrom_stringÖеÄ×Ö·û,²¢½«Æäת»»³Éto_stringÖжÔÓ¦µÄ×Ö·û.
    ÏÂÃæÕâ¸öÀý×ÓÓÃTRANSLATE()½«SECRET MESSAGE:MEET ME IN THE PARKÖеÄÿһ¸ö×Ö·û¶¼×ª»»³É×Öĸ±íÖÐÆäºóÃæµÚËĸö×Öĸ:½«A±ä³ÉE¡¢B±ä³ÉF£¬ÒÀ´ÎÀàÍÆ£º
    SELECT TRANSLATE('SECRET MESSAGE:MEET ME IN THE PARK',
      'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
      'EFGHIJKLMNOPQRSTUVWXYZABCD')
    FROM dual;
  3. ʹÓÃDECODE()º¯Êý
    DECODE(value, search_value, result, default_value)¶ÔvalueÓësearch_value½øÐбȽϡ£Èç¹ûÕâÁ½¸öÖµÏàµÈ£¬DECODE()·µ»Øresult£¬·ñÔò¾Í·µ»Ødefault_value¡£DECODE()ÔÊÐíÔÚSQLÖÐÖ´ÐÐif-then-elseÀàÐ͵ÄÂß¼­´¦Àí£¬¶ø²»ÐèҪʹÓÃPL/SQL¡£
    SELECT DECODE(1, 1, 2, 3)
    FROM dual;
    ÉÏÃæµÄÀý×ÓÖУ¬DECODE()·µ»ØÖµÎª2£¬ÒòΪ¶Ô1Óë1½øÐбȽϣ¬ÓÉÓÚÕâÁ½ÕßÏàµÈ£¬Òò´Ë·µ»Ø2¡£
    ¿ÉÒÔÏòDECODE()´«µÝ¶à¸öËÑË÷ºÍ½á¹û²ÎÊý£¬
    SELECT product_id, product_type_id,
    DECODE(product_type_id,
      1, 'Book',
      2, 'Video',
      3, 'DVD',
      4, 'CD',
      'Magazine')
    FROM products;
  4. ʹÓÃCASE±í´ïʽ
    CASE±í´ïʽ¿ÉÒÔÔÚSQLÖÐʵÏÖif-then-elseÐ͵ÄÂß¼­£¬¶ø²»±ØÊ¹ÓÃPL/SQL¡£CASEµÄ¹¤×÷·½Ê½ÓëDECODE()ÀàËÆ£¬µ«ÊÇÎÒÃÇÓ¦¸ÃʹÓÃCASE£¬ÒòΪËüÓëANSI¼æÈÝ¡£
    ÓÐÁ½ÖÖÀàÐ͵ÄCASE±í´ïʽ£º
    • ¼òµ¥case±í´ïʽ£¬Ê¹Óñí´ïʽȷ¶¨·µ»ØÖµ¡£
    CASE search_expression
      WHEN expression1 THEN result1
      WHEN expression2 THEN result2
      ...
      WHEN expressionN THEN resultN
      ELSE default_result
    END
    • ËÑË÷case±í´ïʽ£¬Ê¹ÓÃÌõ¼þÈ·¶¨·µ»ØÖµ¡£
      CASE
        WHEN condition1 THEN result1
        WHEN condition2 THEN result2
        ...
        WHEN conditionN THEN resultN
        ELSE default_result
      END
  5. ²ã´Î»¯²éѯ
  6. ʹÓÃÀ©Õ¹µÄGROUP BY×Ó¾ä
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