{"id":17901,"date":"2024-03-15T15:56:24","date_gmt":"2024-03-15T15:56:24","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/"},"modified":"2024-03-21T12:01:16","modified_gmt":"2024-03-21T12:01:16","slug":"how-does-oracle-declare-identifiers","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/","title":{"rendered":"How does Oracle declare identifiers?"},"content":{"rendered":"

In Oracle, identifiers can be declared using the following methods:<\/p>\n

    \n
  1. Variable declaration: Use the keyword DECLARE to declare one or more variables, and then use the keyword VAR (optional) to specify the variable’s name and data type.<\/li>\n
  2. For example:
    \nDECLARE
    \nvar_name datatype;
    \n\u2026
    \nVAR var_name datatype;<\/li>\n
  3. Constant declaration: Use the keyword CONSTANT to declare a constant, then use the keyword TYPE to specify the data type of the constant.<\/li>\n
  4. For example:
    \nDECLARE a constant named const_name of type TYPE with a value of value;<\/li>\n
  5. Cursor declaration: Use the keyword CURSOR to declare a cursor, then use the keyword FOR SELECT to specify the cursor’s query statement.<\/li>\n
  6. For instance:
    \nCREATE a cursor named cursor_name that SELECTS column1, column2, … FROM table_name WHERE condition;<\/li>\n
  7. Exception declaration: Use the keyword EXCEPTION to declare an exception.<\/li>\n
  8. For example:
    \nDECLARE exception_name EXCEPTION;<\/li>\n
  9. Declare a subroutine (procedure or function): Use the keywords PROCEDURE or FUNCTION to declare a subroutine, then specify the name, parameter list, and return type of the subroutine.<\/li>\n
  10. For example:
    \nIn the PROCEDURE procedure_name, parameters param1 and param2 are declared with their respective datatypes.
    \nIn the FUNCTION function_name, parameters param1 and param2 are specified with their datatypes and the return type is declared.<\/li>\n<\/ol>\n

    It is important to note that when declaring identifiers, you need to specify the identifier’s name and data type (if applicable), and follow Oracle’s naming conventions and data type requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"

    In Oracle, identifiers can be declared using the following methods: Variable declaration: Use the keyword DECLARE to declare one or more variables, and then use the keyword VAR (optional) to specify the variable’s name and data type. For example: DECLARE var_name datatype; \u2026 VAR var_name datatype; Constant declaration: Use the keyword CONSTANT to declare a […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-17901","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow does Oracle declare identifiers? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How does Oracle declare identifiers?\" \/>\n<meta property=\"og:description\" content=\"In Oracle, identifiers can be declared using the following methods: Variable declaration: Use the keyword DECLARE to declare one or more variables, and then use the keyword VAR (optional) to specify the variable’s name and data type. For example: DECLARE var_name datatype; \u2026 VAR var_name datatype; Constant declaration: Use the keyword CONSTANT to declare a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T15:56:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T12:01:16+00:00\" \/>\n<meta name=\"author\" content=\"Ava Mitchell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ava Mitchell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\"},\"author\":{\"name\":\"Ava Mitchell\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/a3e2658c2cb9fb2be95ae0a8861f4a64\"},\"headline\":\"How does Oracle declare identifiers?\",\"datePublished\":\"2024-03-15T15:56:24+00:00\",\"dateModified\":\"2024-03-21T12:01:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\"},\"wordCount\":245,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-does-oracle-declare-identifiers\/\",\"name\":\"How does Oracle declare identifiers? 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