> Quick Summary: • &variable = placeholder that asks user for value at runtime • & asks for value every single time it appears - even same variable name • Text/Date values need quotes around & - numbers don't • & works in SELECT, FROM, WHERE, ORDER BY - anywhere in the query • &&variable = asks only ONCE and remembers for the whole session • && persists automatically - second occurrence doesn't prompt again • DEFINE variable = value = pre-sets the value - Oracle never asks • DEFINE alone = shows value of one variable • DEFINE with no args = shows ALL defined variables • UNDEFINE variable = clears it from memory - Oracle asks again next time • Professional scripts use DEFINE at top - change once, updates everywhere #OracleSQL #SubstitutionVariables #DEFINE #UNDEFINE #SQLScripting #LearnSQL #SQLBeginners #Day18 #100DaysOfCode #TechTwitter

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#FridayReads - SQL scripting: Live in Snowflake 👉 Learn why you would want to write SQL scripts with Snowflake Scripting. by @felipehoffa @SnowflakeDB hubs.li/Q01bqjkj0 #SQL #SQLScripting #scripting #Snowflake #data #cloud #datacloud #SnowflakeSummit

#FridayReads - SQL scripting: Live in Snowflake 👉 Learn why you would want to write SQL scripts with Snowflake Scripting. by @felipehoffa @SnowflakeDB hubs.li/Q016-KcB0 #SQL #SQLScripting #scripting #Snowflake #data #cloud #datacloud #SnowflakeSummit

SQL scripting: Live in Snowflake 👉 Learn why you would want to write SQL scripts with Snowflake Scripting. by @felipehoffa @SnowflakeDB hubs.li/Q016nL760 #SQL #SQLScripting #scripting #Snowflake #data #cloud #datacloud

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