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1 #include <stdlib.h>
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2 #include <stdio.h>
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3 #include <string.h>
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4 #include <libpq-fe.h>
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5
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6 int main(int argc, char **argv) {
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7
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8 // variable declarations:
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9 int err = 0;
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10 int i, count;
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11 char *conninfo;
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12 PGconn *db;
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13 PGresult *res;
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14
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15 // parse command line:
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16 if (argc == 0) return 1;
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17 if (argc == 1 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
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18 FILE *out;
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19 out = argc == 1 ? stderr : stdout;
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20 fprintf(stdout, "\n");
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21 fprintf(stdout, "Usage: %s <conninfo>\n", argv[0]);
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22 fprintf(stdout, "\n");
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23 fprintf(stdout, "<conninfo> is specified by PostgreSQL's libpq,\n");
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24 fprintf(stdout, "see http://www.postgresql.org/docs/9.1/static/libpq-connect.html\n");
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25 fprintf(stdout, "\n");
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26 fprintf(stdout, "Example: %s dbname=liquid_feedback\n", argv[0]);
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27 fprintf(stdout, "\n");
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28 return argc == 1 ? 1 : 0;
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29 }
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30 {
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31 size_t len = 0;
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32 for (i=1; i<argc; i++) len += strlen(argv[i]) + 1;
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33 conninfo = malloc(len * sizeof(char));
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34 if (!conninfo) {
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35 fprintf(stderr, "Error: Could not allocate memory for conninfo string\n");
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36 return 1;
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37 }
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38 conninfo[0] = 0;
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39 for (i=1; i<argc; i++) {
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40 if (i>1) strcat(conninfo, " ");
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41 strcat(conninfo, argv[i]);
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42 }
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43 }
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44
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45 // connect to database:
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46 db = PQconnectdb(conninfo);
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47 if (!db) {
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48 fprintf(stderr, "Error: Could not create database handle\n");
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49 return 1;
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50 }
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51 if (PQstatus(db) != CONNECTION_OK) {
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52 fprintf(stderr, "Could not open connection:\n%s", PQerrorMessage(db));
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53 return 1;
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54 }
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55
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56 // delete expired sessions:
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57 res = PQexec(db, "DELETE FROM \"expired_session\"");
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58 if (!res) {
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59 fprintf(stderr, "Error in pqlib while sending SQL command deleting expired sessions\n");
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60 err = 1;
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61 } else if (
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62 PQresultStatus(res) != PGRES_COMMAND_OK &&
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63 PQresultStatus(res) != PGRES_TUPLES_OK
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64 ) {
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65 fprintf(stderr, "Error while executing SQL command deleting expired sessions:\n%s", PQresultErrorMessage(res));
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66 err = 1;
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67 PQclear(res);
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68 } else {
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69 PQclear(res);
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70 }
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71
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72 // check member activity:
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73 res = PQexec(db, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"check_activity\"()");
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74 if (!res) {
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75 fprintf(stderr, "Error in pqlib while sending SQL command checking member activity\n");
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76 err = 1;
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77 } else if (
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78 PQresultStatus(res) != PGRES_COMMAND_OK &&
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79 PQresultStatus(res) != PGRES_TUPLES_OK
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80 ) {
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81 fprintf(stderr, "Error while executing SQL command checking member activity:\n%s", PQresultErrorMessage(res));
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82 err = 1;
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83 PQclear(res);
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84 } else {
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85 PQclear(res);
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86 }
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87
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88 // calculate member counts:
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89 res = PQexec(db, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"calculate_member_counts\"()");
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90 if (!res) {
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91 fprintf(stderr, "Error in pqlib while sending SQL command calculating member counts\n");
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92 err = 1;
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93 } else if (
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94 PQresultStatus(res) != PGRES_COMMAND_OK &&
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95 PQresultStatus(res) != PGRES_TUPLES_OK
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96 ) {
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97 fprintf(stderr, "Error while executing SQL command calculating member counts:\n%s", PQresultErrorMessage(res));
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98 err = 1;
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99 PQclear(res);
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100 } else {
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101 PQclear(res);
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102 }
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103
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104 // update open issues:
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105 res = PQexec(db, "SELECT \"id\" FROM \"open_issue\"");
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106 if (!res) {
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107 fprintf(stderr, "Error in pqlib while sending SQL command selecting open issues\n");
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108 err = 1;
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109 } else if (PQresultStatus(res) != PGRES_TUPLES_OK) {
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110 fprintf(stderr, "Error while executing SQL command selecting open issues:\n%s", PQresultErrorMessage(res));
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111 err = 1;
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112 PQclear(res);
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113 } else {
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114 count = PQntuples(res);
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115 for (i=0; i<count; i++) {
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116 char *issue_id, *escaped_issue_id;
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117 PGresult *res2, *old_res2;
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118 int j;
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119 issue_id = PQgetvalue(res, i, 0);
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120 escaped_issue_id = PQescapeLiteral(db, issue_id, strlen(issue_id));
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121 old_res2 = NULL;
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122 for (j=0; ; j++) {
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123 fprintf(stderr, "%i\n", j); // DEBUG
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124 if (j >= 20) { // safety to avoid endless loops
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125 fprintf(stderr, "Function \"check_issue\"(...) returned non-null value too often.\n");
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126 err = 1;
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127 if (j > 0) PQclear(old_res2);
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128 break;
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129 }
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130 if (j == 0) {
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131 char *cmd;
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132 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"check_issue\"(%s, NULL)", escaped_issue_id) < 0) {
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133 fprintf(stderr, "Could not prepare query string in memory.\n");
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134 err = 1;
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135 break;
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136 }
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137 res2 = PQexec(db, cmd);
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138 free(cmd);
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139 } else {
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140 char *persist, *escaped_persist, *cmd;
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141 persist = PQgetvalue(old_res2, 0, 0);
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142 escaped_persist = PQescapeLiteral(db, persist, strlen(persist));
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143 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"check_issue\"(%s, %s::\"check_issue_persistence\")", escaped_issue_id, escaped_persist) < 0) {
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144 PQfreemem(escaped_persist);
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145 fprintf(stderr, "Could not prepare query string in memory.\n");
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146 err = 1;
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147 PQclear(old_res2);
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148 break;
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149 }
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150 PQfreemem(escaped_persist);
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151 res2 = PQexec(db, cmd);
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152 free(cmd);
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153 PQclear(old_res2);
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154 }
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155 if (!res2) {
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156 fprintf(stderr, "Error in pqlib while sending SQL command to call function \"check_issue\"(...):\n");
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157 err = 1;
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158 break;
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159 } else if (
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160 PQresultStatus(res2) != PGRES_COMMAND_OK &&
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161 PQresultStatus(res2) != PGRES_TUPLES_OK
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162 ) {
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163 fprintf(stderr, "Error while calling SQL function \"check_issue\"(...):\n%s", PQresultErrorMessage(res2));
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164 err = 1;
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165 PQclear(res2);
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166 break;
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167 } else {
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168 if (PQntuples(res2) >= 1 && !PQgetisnull(res2, 0, 0)) {
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169 old_res2 = res2;
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170 } else {
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171 PQclear(res2);
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172 break;
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173 }
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174 }
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175 }
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176 PQfreemem(escaped_issue_id);
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177 }
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178 PQclear(res);
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179 }
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180
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181 // cleanup and exit
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182 PQfinish(db);
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183 return err;
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184
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185 }
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