Jaswindder Kummar

Post excerpt

𝗦𝗶𝘅 𝗰𝗼𝗺𝗺𝗮𝗻𝗱𝘀. Three of them can 𝘄𝗶𝗽𝗲 𝗼𝘂𝘁 𝗿𝗲𝗮𝗹 𝗱𝗮𝘁𝗮, and it's usually the same missing line. SQL is easy to learn and 𝘂𝗻𝗳𝗼𝗿𝗴𝗶𝘃𝗶𝗻𝗴 𝗶𝗻 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻. Worth knowing which side of that line each command sits on before you run it against anything that matters. 𝗧𝗵𝗲 𝟲 𝗰𝗼𝗿𝗲 𝗰𝗼𝗺𝗺𝗮𝗻𝗱𝘀: 𝟭. 𝗦𝗘𝗟𝗘𝗖𝗧 • Read data from a table • The only 𝗴𝗲𝗻𝘂𝗶𝗻𝗲𝗹𝘆 𝘀𝗮𝗳𝗲 one. Run it first, every time. It tells you exactly how many rows the next command is about to touch…

52 reactions • 50 comments