[Solved] Need to optimize query and loop the dates

How to optimize this SQL query?

In case you have your own slow SQL query, you can optimize it automatically here.

For the query above, the following recommendations will be helpful as part of the SQL tuning process.
You'll find 3 sections below:

  1. Description of the steps you can take to speed up the query.
  2. The optimal indexes for this query, which you can copy and create in your database.
  3. An automatically re-written query you can copy and execute in your database.
The optimization process and recommendations:
  1. Create Optimal Indexes (modified query below): The recommended indexes are an integral part of this optimization effort and should be created before testing the execution duration of the optimized query.
  2. Use UNION ALL instead of UNION (query line: 166): Always use UNION ALL unless you need to eliminate duplicate records. By using UNION ALL, you'll avoid the expensive distinct operation the database applies when using a UNION clause.
Optimal indexes for this query:
ALTER TABLE `CP_A_HIS` ADD INDEX `cp_his_idx_t_t_c_s_cp_dt_s_ins_cp_re_s_a` (`T_T`,`C_S`,`CP_EX_DT`,`S_I_INST`,`CP_REA`,`S_A`);
ALTER TABLE `CP_A_HIS` ADD INDEX `cp_his_idx_t_t_c_s_cp_dt_s_ins_cp_re_inst` (`T_T`,`C_S`,`CP_EX_DT`,`S_I_INST`,`CP_REA`,`INST`);
ALTER TABLE `IN` ADD INDEX `in_idx_inst` (`INST`);
ALTER TABLE `SE_MA` ADD INDEX `se_ma_idx_s_a` (`S_A`);
The optimized query:
SELECT
        A.S_A,
        C.I_N,
        C.P_A_I,
        C.P_A_I_TYPE,
        C.C_C,
        'Tel',
        A.T_T AS T_T_Tel,
        A.D_A AS D_A_Tel,
        A.C_E_D AS E_D_Tel,
        A.C_P_D AS P_D_Tel,
        'BBG',
        D.T_T AS T_T_BB,
        D.D_A AS D_A_BB,
        D.C_E_D AS E_D_BB,
        D.C_P_D AS P_D_BB,
        'Ext',
        E.T_T AS T_T_Ext,
        E.D_A AS D_A_Ext,
        E.C_E_D AS E_D_Ext,
        E.C_P_D AS P_D_Ext 
    FROM
        TO.CP_A_HIS A,
        PA_MA.IN B,
        SE.SE_MA C,
        TO.CP_A_HIS D,
        TO.CP_A_HIS E 
    WHERE
        A.T_T = 'CASHDIV' 
        AND A.C_S = 'PD' 
        AND A.S_A = C.S_A 
        AND A.S_I_INST = B.INST 
        AND A.CP_EX_DT = '1-Jul-2014' 
        AND A.S_I_INST = 46 
        AND A.S_A = D.S_A(+) 
        AND A.T_T = D.T_T(+) 
        AND A.CP_EX_DT = D.CP_EX_DT(+) 
        AND D.C_S(+) = 'PD' 
        AND D.S_I_INST(+) = 45 
        AND (
            A.CP_REA = 'REG' 
            AND D.CP_REA(+) IN (
                'final', 'REG', 'REG cash', 'partnership dst'
            )
        ) 
        AND D.UPDATE_DATE(+) > '16-Apr-2014' 
        AND A.S_A = E.S_A(+) 
        AND A.T_T = E.T_T(+) 
        AND A.CP_EX_DT = E.CP_EX_DT(+) 
        AND E.C_S(+) = 'PD' 
        AND E.S_I_INST(+) = 51 
        AND A.CP_REA = E.CP_REA(+) 
    UNION
    SELECT
        A.S_A,
        C.I_N,
        C.P_A_I,
        C.P_A_I_TYPE,
        C.C_C,
        'Tel',
        A.T_T AS T_T_Tel,
        A.D_A AS D_A_Tel,
        A.C_E_D AS E_D_Tel,
        A.C_P_D AS P_D_Tel,
        'BBG',
        D.T_T AS T_T_BB,
        D.D_A AS D_A_BB,
        D.C_E_D AS E_D_BB,
        D.C_P_D AS P_D_BB,
        'Ext',
        E.T_T AS T_T_Ext,
        E.D_A AS D_A_Ext,
        E.C_E_D AS E_D_Ext,
        E.C_P_D AS P_D_Ext 
    FROM
        TO.CP_A_HIS A,
        PA_MA.IN B,
        SE.SE_MA C,
        TO.CP_A_HIS D,
        TO.CP_A_HIS E 
    WHERE
        A.T_T = 'CASHDIV' 
        AND A.C_S = 'PD' 
        AND A.S_A = C.S_A 
        AND A.S_I_INST = B.INST 
        AND A.CP_EX_DT = '1-Jul-2014' 
        AND A.S_I_INST = 46 
        AND A.S_A = D.S_A(+) 
        AND A.T_T = D.T_T(+) 
        AND A.CP_EX_DT = D.CP_EX_DT(+) 
        AND D.C_S(+) = 'PD' 
        AND D.S_I_INST(+) = 45 
        AND (
            A.CP_REA = 'SPECIAL' 
            AND D.CP_REA(+) IN (
                'special cash', 'SPECIAL'
            )
        ) 
        AND D.UPDATE_DATE(+) > '16-Apr-2014' 
        AND A.S_A = E.S_A(+) 
        AND A.T_T = E.T_T(+) 
        AND A.CP_EX_DT = E.CP_EX_DT(+) 
        AND E.C_S(+) = 'PD' 
        AND E.S_I_INST(+) = 51 
        AND A.CP_REA = E.CP_REA(+) 
    UNION
    SELECT
        D.S_A,
        C.I_N,
        C.P_A_I,
        C.P_A_I_TYPE,
        C.C_C,
        'Tel',
        A.T_T AS T_T_Tel,
        A.D_A AS D_A_Tel,
        A.C_E_D AS E_D_Tel,
        A.C_P_D AS P_D_Tel,
        'BBG',
        D.T_T AS T_T_BB,
        D.D_A AS D_A_BB,
        D.C_E_D AS E_D_BB,
        D.C_P_D AS P_D_BB,
        'Ext',
        E.T_T AS T_T_Ext,
        E.D_A AS D_A_Ext,
        E.C_E_D AS E_D_Ext,
        E.C_P_D AS P_D_Ext 
    FROM
        TO.CP_A_HIS A,
        PA_MA.IN B,
        SE.SE_MA C,
        TO.CP_A_HIS D,
        TO.CP_A_HIS E 
    WHERE
        D.T_T = 'CASHDIV' 
        AND D.C_S = 'PD' 
        AND D.S_A = C.S_A 
        AND D.S_I_INST = B.INST 
        AND D.CP_EX_DT = '1-Jul-2014' 
        AND D.S_I_INST = 45 
        AND A.S_A(+) = D.S_A 
        AND A.T_T(+) = D.T_T 
        AND A.CP_EX_DT(+) = D.CP_EX_DT 
        AND A.C_S(+) = 'PD' 
        AND A.S_I_INST(+) = 46 
        AND (
            A.CP_REA(+) = 'SPECIAL' 
            AND D.CP_REA IN (
                'special cash', 'SPECIAL'
            )
        ) 
        AND D.UPDATE_DATE > '16-Apr-2014' 
        AND A.INST IS NULL 
        AND D.S_A = E.S_A(+) 
        AND D.T_T = E.T_T(+) 
        AND D.CP_EX_DT = E.CP_EX_DT(+) 
        AND E.C_S(+) = 'PD' 
        AND E.S_I_INST(+) = 51 
        AND (
            E.CP_REA(+) = 'SPECIAL' 
            AND D.CP_REA IN (
                'special cash', 'SPECIAL'
            )
        ) 
    UNION
    SELECT
        D.S_A,
        C.I_N,
        C.P_A_I,
        C.P_A_I_TYPE,
        C.C_C,
        'Tel',
        A.T_T AS T_T_Tel,
        A.D_A AS D_A_Tel,
        A.C_E_D AS E_D_Tel,
        A.C_P_D AS P_D_Tel,
        'BBG',
        D.T_T AS T_T_BB,
        D.D_A AS D_A_BB,
        D.C_E_D AS E_D_BB,
        D.C_P_D AS P_D_BB,
        'Ext',
        E.T_T AS T_T_Ext,
        E.D_A AS D_A_Ext,
        E.C_E_D AS E_D_Ext,
        E.C_P_D AS P_D_Ext 
    FROM
        TO.CP_A_HIS A,
        PA_MA.IN B,
        SE.SE_MA C,
        TO.CP_A_HIS D,
        TO.CP_A_HIS E 
    WHERE
        D.T_T = 'CASHDIV' 
        AND D.C_S = 'PD' 
        AND D.S_A = C.S_A 
        AND D.S_I_INST = B.INST 
        AND D.CP_EX_DT = '1-Jul-2014' 
        AND D.S_I_INST = 45 
        AND A.S_A(+) = D.S_A 
        AND A.T_T(+) = D.T_T 
        AND A.CP_EX_DT(+) = D.CP_EX_DT 
        AND A.C_S(+) = 'PD' 
        AND A.S_I_INST(+) = 46 
        AND (
            A.CP_REA(+) = 'REG' 
            AND D.CP_REA IN (
                'final', 'REG', 'REG cash', 'partnership dst'
            )
        ) 
        AND D.UPDATE_DATE > '16-Apr-2014' 
        AND A.INST IS NULL 
        AND D.S_A = E.S_A(+) 
        AND D.T_T = E.T_T(+) 
        AND D.CP_EX_DT = E.CP_EX_DT(+) 
        AND E.C_S(+) = 'PD' 
        AND E.S_I_INST(+) = 51 
        AND (
            E.CP_REA(+) = 'REG' 
            AND D.CP_REA IN (
                'final', 'REG', 'REG cash', 'partnership dst'
            )
        )

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* original question posted on StackOverflow here.