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First query result is not valid after a second one #206

Description

@Ronneesley

Hello,

When I execute two queries, the first result becomes random.

Given the database:

createdatabasetest;
use test;
createtableperson (
id int auto_increment,
name varchar(100),
primary key (id)
);
createtableaddress (
id int auto_increment primary key,
person int,
description varchar(200),
foreign key (person) references person(id)
);
insert into person(name) values('Roni');
insert into address(person, description) values(1, 'Street 1');

Given the code:

julia>using DBInterface, MySQL
julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
julia> r1.id
1
julia> r1.person
1
julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
MySQL.TextRow{true}: (id =1, name ="Roni")
julia> r2.id
1
julia> r2.name
"Roni"
julia> r1.description
"\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

Note that result r1.description is incorrect! The correct answer is: "Street 1", but
when I do the second query and store the result at r2, the first result r1 turns incorrect.

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
       blocks
      (function() {
      function addCopyButtons() {
      document.querySelectorAll('pre code').forEach(function(codeBlock) {
      if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
      codeBlock.parentElement.setAttribute('data-copy-added', 'true');
      var btn = document.createElement('button');
      btn.textContent = 'Copy';
      btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
      btn.onmouseover = function() { this.style.opacity = '1'; };
      btn.onmouseout = function() { this.style.opacity = '0.7'; };
      btn.onclick = function() {
      navigator.clipboard.writeText(codeBlock.textContent).then(function() {
      btn.textContent = 'Copied!';
      setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
      });
      };
      codeBlock.parentElement.style.position = 'relative';
      codeBlock.parentElement.appendChild(btn);
      });
      }
      addCopyButtons();
      // Re-run on dynamic content
      var observer = new MutationObserver(addCopyButtons);
      observer.observe(document.body, { childList: true, subtree: true });
      })();
      }
      } catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
      })();
      (function(){
      try {
      var __m = "github.com";
      var __re = new RegExp('^' + "github\\.com" + '
      First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
      Skip to content

      First query result is not valid after a second one #206

      Description

      @Ronneesley

      Hello,

      When I execute two queries, the first result becomes random.

      Given the database:

      createdatabasetest;
      use test;
      createtableperson (
      id int auto_increment,
      name varchar(100),
      primary key (id)
      );
      createtableaddress (
      id int auto_increment primary key,
      person int,
      description varchar(200),
      foreign key (person) references person(id)
      );
      insert into person(name) values('Roni');
      insert into address(person, description) values(1, 'Street 1');

      Given the code:

      julia>using DBInterface, MySQL
      julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
      julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
      MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
      julia> r1.id
      1
      julia> r1.person
      1
      julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
      MySQL.TextRow{true}: (id =1, name ="Roni")
      julia> r2.id
      1
      julia> r2.name
      "Roni"
      julia> r1.description
      "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

      Note that result r1.description is incorrect! The correct answer is: "Street 1", but
      when I do the second query and store the result at r2, the first result r1 turns incorrect.

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          , 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
          Skip to content

          First query result is not valid after a second one #206

          Description

          @Ronneesley

          Hello,

          When I execute two queries, the first result becomes random.

          Given the database:

          createdatabasetest;
          use test;
          createtableperson (
          id int auto_increment,
          name varchar(100),
          primary key (id)
          );
          createtableaddress (
          id int auto_increment primary key,
          person int,
          description varchar(200),
          foreign key (person) references person(id)
          );
          insert into person(name) values('Roni');
          insert into address(person, description) values(1, 'Street 1');

          Given the code:

          julia>using DBInterface, MySQL
          julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
          julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
          MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
          julia> r1.id
          1
          julia> r1.person
          1
          julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
          MySQL.TextRow{true}: (id =1, name ="Roni")
          julia> r2.id
          1
          julia> r2.name
          "Roni"
          julia> r1.description
          "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

          Note that result r1.description is incorrect! The correct answer is: "Street 1", but
          when I do the second query and store the result at r2, the first result r1 turns incorrect.

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              , 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
              Skip to content

              First query result is not valid after a second one #206

              Description

              @Ronneesley

              Hello,

              When I execute two queries, the first result becomes random.

              Given the database:

              createdatabasetest;
              use test;
              createtableperson (
              id int auto_increment,
              name varchar(100),
              primary key (id)
              );
              createtableaddress (
              id int auto_increment primary key,
              person int,
              description varchar(200),
              foreign key (person) references person(id)
              );
              insert into person(name) values('Roni');
              insert into address(person, description) values(1, 'Street 1');

              Given the code:

              julia>using DBInterface, MySQL
              julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
              julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
              MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
              julia> r1.id
              1
              julia> r1.person
              1
              julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
              MySQL.TextRow{true}: (id =1, name ="Roni")
              julia> r2.id
              1
              julia> r2.name
              "Roni"
              julia> r1.description
              "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

              Note that result r1.description is incorrect! The correct answer is: "Street 1", but
              when I do the second query and store the result at r2, the first result r1 turns incorrect.

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                  , 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
                  Skip to content

                  First query result is not valid after a second one #206

                  Description

                  @Ronneesley

                  Hello,

                  When I execute two queries, the first result becomes random.

                  Given the database:

                  createdatabasetest;
                  use test;
                  createtableperson (
                  id int auto_increment,
                  name varchar(100),
                  primary key (id)
                  );
                  createtableaddress (
                  id int auto_increment primary key,
                  person int,
                  description varchar(200),
                  foreign key (person) references person(id)
                  );
                  insert into person(name) values('Roni');
                  insert into address(person, description) values(1, 'Street 1');

                  Given the code:

                  julia>using DBInterface, MySQL
                  julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
                  julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
                  MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
                  julia> r1.id
                  1
                  julia> r1.person
                  1
                  julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
                  MySQL.TextRow{true}: (id =1, name ="Roni")
                  julia> r2.id
                  1
                  julia> r2.name
                  "Roni"
                  julia> r1.description
                  "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

                  Note that result r1.description is incorrect! The correct answer is: "Street 1", but
                  when I do the second query and store the result at r2, the first result r1 turns incorrect.

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                      Skip to content

                      First query result is not valid after a second one #206

                      Description

                      @Ronneesley

                      Hello,

                      When I execute two queries, the first result becomes random.

                      Given the database:

                      createdatabasetest;
                      use test;
                      createtableperson (
                      id int auto_increment,
                      name varchar(100),
                      primary key (id)
                      );
                      createtableaddress (
                      id int auto_increment primary key,
                      person int,
                      description varchar(200),
                      foreign key (person) references person(id)
                      );
                      insert into person(name) values('Roni');
                      insert into address(person, description) values(1, 'Street 1');

                      Given the code:

                      julia>using DBInterface, MySQL
                      julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
                      julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
                      MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
                      julia> r1.id
                      1
                      julia> r1.person
                      1
                      julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
                      MySQL.TextRow{true}: (id =1, name ="Roni")
                      julia> r2.id
                      1
                      julia> r2.name
                      "Roni"
                      julia> r1.description
                      "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

                      Note that result r1.description is incorrect! The correct answer is: "Street 1", but
                      when I do the second query and store the result at r2, the first result r1 turns incorrect.

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                      No one assigned

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                          , 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
                          Skip to content

                          First query result is not valid after a second one #206

                          Description

                          @Ronneesley

                          Hello,

                          When I execute two queries, the first result becomes random.

                          Given the database:

                          createdatabasetest;
                          use test;
                          createtableperson (
                          id int auto_increment,
                          name varchar(100),
                          primary key (id)
                          );
                          createtableaddress (
                          id int auto_increment primary key,
                          person int,
                          description varchar(200),
                          foreign key (person) references person(id)
                          );
                          insert into person(name) values('Roni');
                          insert into address(person, description) values(1, 'Street 1');

                          Given the code:

                          julia>using DBInterface, MySQL
                          julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
                          julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
                          MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
                          julia> r1.id
                          1
                          julia> r1.person
                          1
                          julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
                          MySQL.TextRow{true}: (id =1, name ="Roni")
                          julia> r2.id
                          1
                          julia> r2.name
                          "Roni"
                          julia> r1.description
                          "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

                          Note that result r1.description is incorrect! The correct answer is: "Street 1", but
                          when I do the second query and store the result at r2, the first result r1 turns incorrect.

                          Metadata

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                          No one assigned

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                              , 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); First query result is not valid after a second one · Issue #206 · JuliaDatabases/MySQL.jl · GitHub
                              Skip to content

                              First query result is not valid after a second one #206

                              Description

                              @Ronneesley

                              Hello,

                              When I execute two queries, the first result becomes random.

                              Given the database:

                              createdatabasetest;
                              use test;
                              createtableperson (
                              id int auto_increment,
                              name varchar(100),
                              primary key (id)
                              );
                              createtableaddress (
                              id int auto_increment primary key,
                              person int,
                              description varchar(200),
                              foreign key (person) references person(id)
                              );
                              insert into person(name) values('Roni');
                              insert into address(person, description) values(1, 'Street 1');

                              Given the code:

                              julia>using DBInterface, MySQL
                              julia> con = DBInterface.connect(MySQL.Connection, "127.0.0.1", "root", "PASSWORD", db="test", port=3306);
                              julia> r1 =first(DBInterface.execute(con, "select * from address where id = 1"))
                              MySQL.TextRow{true}: (id =1, person =1, description ="Street 1")
                              julia> r1.id
                              1
                              julia> r1.person
                              1
                              julia> r2 =first(DBInterface.execute(con, "select * from person where id = 1"))
                              MySQL.TextRow{true}: (id =1, name ="Roni")
                              julia> r2.id
                              1
                              julia> r2.name
                              "Roni"
                              julia> r1.description
                              "\0_9\n\x02\0\0\0\0b9\n\x02\0\0\0\0e9..."

                              Note that result r1.description is incorrect! The correct answer is: "Street 1", but
                              when I do the second query and store the result at r2, the first result r1 turns incorrect.

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